jabber plugin greatly extended. now uses links, automatically connects the next time its started, supports adding contacts, can cope with < a little better. started work towards support for NAT hole punching - can currently connect if the server has a correctly guessed public ip (first detected ipv4 address needs to work), needs more work for other scenarios.
other plugins required a little maintenance.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4398 fc73d0e0-1445-4013-8a0c-d673dee63da5
image_width is now only set by a single function.
tweaked scancode inputs slightly. added support for printscreen binds.
changed the way gamma works. glsl gamma now used when running windows, or hardware gamma is not available. removed gl_contrast+gl_brightness.
q2 gamecode support no longer has a system componant. this means that ports only need the generic stuff.
misc tweaks to the d3d11 renderer.
added brief descriptions to many builtins. need to add comments to constants, globals, and fields too, somehow.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4355 fc73d0e0-1445-4013-8a0c-d673dee63da5
