tests: make the unit test result type `CURLcode`

Before this patch, the result code was a mixture of `int` and
`CURLcode`.

Also adjust casts and fix a couple of minor issues fou

tests: make the unit test result type `CURLcode`

Before this patch, the result code was a mixture of `int` and
`CURLcode`.

Also adjust casts and fix a couple of minor issues found along the way.

Cherry-picked from #13489
Closes #13600

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tests: fix compiler warnings

Seen with llvm 17 on Windows x64.

```
.../curl/tests/server/rtspd.c:136:13: warning: no previous extern declaration for non-static variable 'logdir'

tests: fix compiler warnings

Seen with llvm 17 on Windows x64.

```
.../curl/tests/server/rtspd.c:136:13: warning: no previous extern declaration for non-static variable 'logdir' [-Wmissing-variable-declarations]
136 | const char *logdir = "log";
| ^
.../curl/tests/server/rtspd.c:136:7: note: declare 'static' if the variable is not intended to be used outside of this translation unit
136 | const char *logdir = "log";
| ^
.../curl/tests/server/rtspd.c:137:6: warning: no previous extern declaration for non-static variable 'loglockfile' [-Wmissing-variable-declarations]
137 | char loglockfile[256];
| ^
.../curl/tests/server/rtspd.c:137:1: note: declare 'static' if the variable is not intended to be used outside of this translation unit
137 | char loglockfile[256];
| ^
.../curl/tests/server/fake_ntlm.c:43:13: warning: no previous extern declaration for non-static variable 'logdir' [-Wmissing-variable-declarations]
43 | const char *logdir = "log";
| ^
.../curl/tests/server/fake_ntlm.c:43:7: note: declare 'static' if the variable is not intended to be used outside of this translation unit
43 | const char *logdir = "log";
| ^
.../curl/src/tool_doswin.c:350:8: warning: possible misuse of comma operator here [-Wcomma]
350 | ++d, ++s;
| ^
.../curl/src/tool_doswin.c:350:5: note: cast expression to void to silence warning
350 | ++d, ++s;
| ^~~
| (void)( )
```

```
.../curl/tests/libtest/lib540.c:146:27: warning: result of comparison 'long' > 2147483647 is always false [-Wtautological-type-limit-compare]
146 | int itimeout = (L > (long)INT_MAX) ? INT_MAX : (int)L;
| ~ ^ ~~~~~~~~~~~~~
1 warning generated.

.../curl/tests/libtest/libntlmconnect.c:195:31: warning: result of comparison 'long' > 2147483647 is always false [-Wtautological-type-limit-compare]
195 | int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeout;
| ~~~~~~~ ^ ~~~~~~~~~~~~~
1 warning generated.

.../curl/tests/libtest/lib591.c:117:31: warning: result of comparison 'long' > 2147483647 is always false [-Wtautological-type-limit-compare]
117 | int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeout;
| ~~~~~~~ ^ ~~~~~~~~~~~~~
1 warning generated.
.../curl/tests/libtest/lib597.c:99:31: warning: result of comparison 'long' > 2147483647 is always false [-Wtautological-type-limit-compare]
99 | int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeout;
| ~~~~~~~ ^ ~~~~~~~~~~~~~
1 warning generated.
```

Seen on macOS Intel:
```
.../curl/tests/server/sws.c:440:64: warning: field precision should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
msnprintf(logbuf, sizeof(logbuf), "Got request: %s %.*s HTTP/%d.%d",
~~^~
1 warning generated.
```

Closes #11925

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tests: increase TEST_HANG_TIMEOUT in two tests

These tests had a 5 second timeout compared to 60 seconds for all other
tests. Make these consistent with the others for more reliability o

tests: increase TEST_HANG_TIMEOUT in two tests

These tests had a 5 second timeout compared to 60 seconds for all other
tests. Make these consistent with the others for more reliability on
heavily-loaded machines.

Ref: #11328

show more ...

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- save

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

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copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the

copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the file
`.reuse/dep5`.

This commit also adds a Github workflow to check pull requests and adapts
copyright.pl to the changes.

Closes #8869

show more ...

copyright: fix year ranges

Follow-up from 4d2f8006777

curl.se: new home

Closes #6172

connection: never reuse CONNECT_ONLY conections

and make CONNECT_ONLY conections never reuse any existing ones either.

Reported-by: Pavel Löbl
Bug: https://curl.haxx.se/mail/lib

connection: never reuse CONNECT_ONLY conections

and make CONNECT_ONLY conections never reuse any existing ones either.

Reported-by: Pavel Löbl
Bug: https://curl.haxx.se/mail/lib-2019-02/0064.html
Closes #3586

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build: remove HAVE_LIMITS_H check

.. because limits.h presence isn't optional, it's required by C89.

Ref: http://port70.net/~nsz/c/c89/c89-draft.html#2.2.4.2

Closes https:/

build: remove HAVE_LIMITS_H check

.. because limits.h presence isn't optional, it's required by C89.

Ref: http://port70.net/~nsz/c/c89/c89-draft.html#2.2.4.2

Closes https://github.com/curl/curl/pull/2215

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code style: use spaces around pluses

tests: Make sure libtests call curl_global_cleanup()

This ensures that global data allocations are freed so Valgrind stays
happy. This was a problem with at least PolarSSL and mbedTLS.

tests/libtest: follow our code style guidelines better

... checksrc of all test code is pending.

URLs: change all http:// URLs to https://

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

show more ...

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.

libtest: fix some compiler warnings

multi interface: fix block when CONNECT_ONLY option is used