The source files from lib/vtls where generated in lib instead of lib/vtls.

Verified-by: Thomas Braun <thomas.braun@virtuell-zuhause.de>

The code didn't properly check the return codes to detect overflows so
it could trigger incorrectly. Like on mingw32.

Regression introduced in 345891ed (curl 7.35.0)

Bug: http://curl.haxx.se/mail/lib-2014-02/0097.html
Reported-by: LM

Disable ALPN or NPN if requested by the user.

Disable ALPN if requested by the user.

See http://curl.haxx.se/mail/lib-2014-02/0004.html for a
discussion on the problem.

Commmit c5f8e2f5 removed the easy handle clean-up from tool_operate,
letting the code that was already present in free_config_fields()
perform the task. Unfortunately, this wasn't the correct place to do
this as it broke protocols, that would perform a logout, as the main
clean-up in tool_main had already been called.

It seems the fips config option causes an error if FIPS mode was
not enabled at stunnel compile-time.  FIPS support was disabled
by default in stunnel 5.00, so this is probably really only needed
on versions between 4.32 and 5.00.

when using --http2 one can now selectively disable NPN or ALPN with
--no-alpn and --no-npn. for now honored with NSS only.

TODO: honor this option with GnuTLS and OpenSSL

SSL_ENABLE_ALPN can be used for preprocessor ALPN feature detection,
but not SSL_NEXT_PROTO_SELECTED, since it is an enum value and not a
preprocessor macro.

For verify file, if the strippart condition removes the line completely
it is now removed from the array.

It's unnecessary for curl testing, and it can otherwise cause
stunnel to fail to start if OpenSSL doesn't support FIPS mode.

This was already mostly being done, except that analysis after the
test still assumed that the valgrind log files would be available. An
alternative way to handle the valgrind + gdb combination could be to
enable one of the valgrind debugger hooks.

lib1515.c:38:26 warning: unused parameter 'curl'
lib1515.c:38:81 warning: unused parameter 'ptr'
lib1515.c:38:5 warning: no previous prototype for 'debug_callback'
lib1515.c:46:5 warning: no previous prototype for 'do_one_request'
lib1515.c:120:3  warning: ISO C90 forbids mixed declarations and code

As well as some code policing such as white space and braces.

Changed the support to a little matrix and added brief explanation of
what ALPN and NPN are for.

Add ALPN and NPN support for NSS. This allows cURL to negotiate
HTTP/2.0 connections when built with NSS.

Not comma, which is an inconsistency and a mistake probably inherited
from the examples section of RFC1867.

This bug has been present since the day curl started to support
multipart formposts, back in the 90s.

Reported-by: Rob Davies
Bug: http://curl.haxx.se/bug/view.cgi?id=1333