Checked in some code improvements and minor fixes that I discovered in the
FreeBSD ports system.

remove unnecessary typecasting of calloc()

Library internal only C preprocessor macros FORMAT_OFF_T and FORMAT_OFF_TU
remain in use as internal curl_off_t print formatting strings for the internal
*printf functions which still cannot

Library internal only C preprocessor macros FORMAT_OFF_T and FORMAT_OFF_TU
remain in use as internal curl_off_t print formatting strings for the internal
*printf functions which still cannot handle print formatting string directives
such as "I64d", "I64u", and others available on MSVC, MinGW, Intel's ICC, and
other DOS/Windows compilers.

This reverts previous commit part which did:

FORMAT_OFF_T -> CURL_FORMAT_CURL_OFF_T
FORMAT_OFF_TU -> CURL_FORMAT_CURL_OFF_TU

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For congruency sake with the naming of other CURL_XXXXXX_CURL_OFF_T macros,
the names of the curl_off_t formatting string directives now become
CURL_FORMAT_CURL_OFF_T and CURL_FORMAT_CURL_OFF

For congruency sake with the naming of other CURL_XXXXXX_CURL_OFF_T macros,
the names of the curl_off_t formatting string directives now become
CURL_FORMAT_CURL_OFF_T and CURL_FORMAT_CURL_OFF_TU.

CURL_FMT_OFF_T -> CURL_FORMAT_CURL_OFF_T
CURL_FMT_OFF_TU -> CURL_FORMAT_CURL_OFF_TU

Remove the use of an internal name for the curl_off_t formatting string directives
and use the common one available from the inside and outside of the library.

FORMAT_OFF_T -> CURL_FORMAT_CURL_OFF_T
FORMAT_OFF_TU -> CURL_FORMAT_CURL_OFF_TU

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Renamed MSDOS_FILESYSTEM to avoid conflict with MIT GSS

Added support for running on Symbian OS.

Some trivial changes

- Dmitry Kurochkin moved several struct fields from the connectdata struct to
the SingleRequest one to make pipelining better. It is a bit tricky to keep
them in the right place, to keep

- Dmitry Kurochkin moved several struct fields from the connectdata struct to
the SingleRequest one to make pipelining better. It is a bit tricky to keep
them in the right place, to keep things related to the actual request or to
the actual connection in the right place.

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fix compiler warning

Daniel Egger made CURLOPT_RANGE work on file:// URLs the very same way it
already worked for FTP:// URLs

All static functions that were previously name Curl_* something no longer
use that prefix as we use that prefix only for library-wide internal global
symbols.

struct HandleData is now called struct SingleRequest, and is only for data that
is inited at the start of the DO action. I removed the Curl_transfer_keeper
struct completely, and I had to mov

struct HandleData is now called struct SingleRequest, and is only for data that
is inited at the start of the DO action. I removed the Curl_transfer_keeper
struct completely, and I had to move out a few struct members (that had to
be set before DO or used after DONE) to the UrlState struct. The SingleRequest
struct is accessed with SessionHandle->req.

One of the biggest reasons for doing this was the bunch of duplicate struct
members in HandleData and Curl_transfer_keeper since it was really messy to
keep track of two variables with the same name and basically the same purpose!

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Rearranged code and changed Curl_readwrite_init() and Curl_pre_readwrite() into
do_init() and do_complete() which now are called first and last in the DO
function. It simplified the flow in m

Rearranged code and changed Curl_readwrite_init() and Curl_pre_readwrite() into
do_init() and do_complete() which now are called first and last in the DO
function. It simplified the flow in multi.c and the functions got more
sensible names!

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if () => if()
while () => while()
and some other minor re-indentings

Fixed an OOM problem with file: URLs
Moved Curl_file_connect into the protocol handler struct.

File is not a protocol that can deal with "persistancy"

Michal Marek forwarded the bug report
https://bugzilla.novell.com/show_bug.cgi?id=332917 about a HTTP redirect to
FTP that caused memory havoc. His work together with my efforts created two

Michal Marek forwarded the bug report
https://bugzilla.novell.com/show_bug.cgi?id=332917 about a HTTP redirect to
FTP that caused memory havoc. His work together with my efforts created two
fixes:

#1 - FTP::file was moved to struct ftp_conn, because is has to be dealt with
at connection cleanup, at which time the struct HandleData could be
used by another connection.
Also, the unused char *urlpath member is removed from struct FTP.

#2 - provide a Curl_reset_reqproto() function that frees
data->reqdata.proto.* on connection setup if needed (that is if the
SessionHandle was used by a different connection).

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We use this ZERO_NULL to avoid picky compiler warnings,
when assigning a NULL pointer to a function pointer var.

Made a few more functions static with the protocol handler table in place.

Added per-protocol callback static tables, replacing callback ptr storage
in the connectdata structure by a single handler table ptr.

Enabled a few more gcc warnings with --enable-debug. Renamed a few
variables to avoid shadowing global declarations.

Added lots of consts

Bug report #1779751 (http://curl.haxx.se/bug/view.cgi?id=1779751) pointed
out that doing first a file:// upload and then an FTP upload crashed libcurl
or at best caused furious valgrind compl

Bug report #1779751 (http://curl.haxx.se/bug/view.cgi?id=1779751) pointed
out that doing first a file:// upload and then an FTP upload crashed libcurl
or at best caused furious valgrind complaints. Fixed now by making sure we
free and clear the file-specific struct properly when done with it.

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Implemented only the parts of Patrick Monnerat's OS/400 patch that renamed
some few internal identifiers to avoid conflicts, which could be useful on
other platforms.

Using fdopen() is a more correct way to implement the CURLOPT_NEW_FILE_PREMS
file.c, but the debug interface was missing. This adds the routines needed
to make the memory debuging work for f

Using fdopen() is a more correct way to implement the CURLOPT_NEW_FILE_PREMS
file.c, but the debug interface was missing. This adds the routines needed
to make the memory debuging work for fdopen().

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