build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the n

build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the need and usage of a header inclusion guard foreign
to libcurl. [1]

Removes the need and presence of an alarming notice we carried
in old setup_once.h [2]

----------------------------------------

1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard
up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H,
this single inclusion guard is enough to ensure that inclusion of
lib/setup_once.h done from lib/setup.h is only done once.

Additionally lib/setup.h has always used __SETUP_ONCE_H macro to
protect inclusion of setup_once.h even after commit ec691ca3, this
was to avoid a circular header inclusion triggered when building a
c-ares enabled version with c-ares sources available which also has
a setup_once.h header. Commit ec691ca3 exposes the real nature of
__SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard
foreign to libcurl belonging to c-ares's setup_once.h

The renaming this commit does, fixes the circular header inclusion,
and as such removes the need and usage of a header inclusion guard
foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl.

2 - Due to the circular interdependency of old lib/setup_once.h and the
c-ares setup_once.h header, old file lib/setup_once.h has carried
back from 2006 up to now days an alarming and prominent notice about
the need of keeping libcurl's and c-ares's setup_once.h in sync.

Given that this commit fixes the circular interdependency, the need
and presence of mentioned notice is removed.

All mentioned interdependencies come back from now old days when
the c-ares project lived inside a curl subdirectory. This commit
removes last traces of such fact.

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Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use

Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use of 76 lib/*.h renamed files
ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

13606bb... build: make use of 93 lib/*.c renamed files
5b6e792... build: rename 93 lib/*.c files
7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

lib/curl_imap.h
lib/curl_smtp.h

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build: make use of 76 lib/*.h renamed files

76 private header files renamed to use our standard naming scheme.

This change affects 322 files in libcurl's source tree.

SSPI related code: Unicode support for WinCE

SSPI related code now compiles with ANSI and WCHAR versions of security
methods (WinCE requires WCHAR versions of methods).

Pulled U

SSPI related code: Unicode support for WinCE

SSPI related code now compiles with ANSI and WCHAR versions of security
methods (WinCE requires WCHAR versions of methods).

Pulled UTF8 to WCHAR conversion methods out of idn_win32.c into their own file.

curl_sasl.c - include curl_memory.h to use correct memory functions.

getenv.c and telnet.c - WinCE compatibility fix

With some committer adjustments

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schannel: remove version number and identify its use with 'schannel' literal

Version number is removed in order to make this info consistent with
how we do it with other MS and Linux sys

schannel: remove version number and identify its use with 'schannel' literal

Version number is removed in order to make this info consistent with
how we do it with other MS and Linux system libraries for which we don't
provide this info.

Identifier changed from 'WinSSPI' to 'schannel' given that this is the
actual provider of the SSL/TLS support. libcurl can still be built with
SSPI and without SCHANNEL support.

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sspi: make Curl_sspi_strerror() libcurl's sspi status code string function

cleanup: remove trailing whitespace

sspi: Fixed incompatible parameter pointer type in Curl_sspi_version

sspi.c: Post Curl_sspi_version() rework code tidy up

Removed duplicate blank lines.
Removed spaces between the not and test in various if statements.
Removed explicit test of NULL in

sspi.c: Post Curl_sspi_version() rework code tidy up

Removed duplicate blank lines.
Removed spaces between the not and test in various if statements.
Removed explicit test of NULL in an if statement.
Placed function returns on same line as function declarations.
Replaced the use of curl_maprintf() with aprintf() as it is the
preprocessor job to do this substitution if ENABLE_CURLX_PRINTF
is set.

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sspi: Reworked Curl_sspi_version() to return version components

Reworked the version function to return four version components rather
than a string that has to be freed by the caller.

schannel: Code cleanup and bug fixes

curl_sspi.c: Fixed mingw32-gcc compiler warnings
curl_sspi.c: Fixed length of error code hex output

The hex value was printed as signed 64-b

schannel: Code cleanup and bug fixes

curl_sspi.c: Fixed mingw32-gcc compiler warnings
curl_sspi.c: Fixed length of error code hex output

The hex value was printed as signed 64-bit value on 64-bit systems:
SEC_E_WRONG_PRINCIPAL (0xFFFFFFFF80090322)

It is now correctly printed as the following:
SEC_E_WRONG_PRINCIPAL (0x80090322)

curl_sspi.c: Fallback to security function table version number
Instead of reporting an unknown version, the interface version is used.

curl_sspi.c: Removed SSPI/ version prefix from Curl_sspi_version
curl_schannel: Replaced static buffer sizes with defined names
curl_schannel.c: First brace when declaring functions on column 0
curl_schannel.c: Put the pointer sign directly at variable name
curl_schannel.c: Use structs directly instead of typedef'ed structs
curl_schannel.c: Removed space before opening brace
curl_schannel.c: Fixed lines being longer than 80 chars

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curl_sspi: Added Curl_sspi_version function

Added new function to get SSPI version as string.
Added required library version.lib to makefiles.
Changed curl_schannel.c to use Curl_ssp

curl_sspi: Added Curl_sspi_version function

Added new function to get SSPI version as string.
Added required library version.lib to makefiles.
Changed curl_schannel.c to use Curl_sspi_version.

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sspi: Refactored socks_sspi and schannel to use same error message functions

Moved the error constant switch to curl_sspi.c and added two new helper
functions to curl_sspi.[ch] which eit

sspi: Refactored socks_sspi and schannel to use same error message functions

Moved the error constant switch to curl_sspi.c and added two new helper
functions to curl_sspi.[ch] which either return the constant or a fully
translated message representing the SSPI security status.
Updated socks_sspi.c and curl_schannel.c to use the new functions.

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Revert "sspi: Added version information"

This reverts commit 2976de480808119dae08fc6f52c8d75ba1aedb1a.

Revert "sspi - Small code tidy up"

This reverts commit 46cd5f1daddad3b3e542e6d93eee52e8bb9a8687.

Revert "Fixed 'Trailing whitespace' found by checksrc."

This reverts commit 683bfa60ad0b52505947e59b03515e5f44378523.

Revert "sspi: Code tidy up to remove unused variable."

This reverts commit 412510f97407d617426d93b80e6b6bf0a8ff11ac.

sspi: Code tidy up to remove unused variable.

Fixed 'Trailing whitespace' found by checksrc.

sspi - Small code tidy up

sspi: Added version information

Added version information for Windows SSPI to curl's main version
string and removed SSPI from the features string.

Use own typedef as workaround for broken sspi.h header (f.e. Watcom).

remove the CVSish $Id$ lines

libcurl's memory.h renamed to curl_memory.h

fix typo in comment