yquake2 7.30 version.

New version with speedup optimization in software render.

Timedemo values (timedemo 1;) on 1366x768:

QUAKE2_7_30: 

• map demo1.dm2 = 27.1 fps (+12% improve)
• map demo2.dm2 = 25.5 fps (+13% improve)

QUAKE2_7_21:

• map demo1.dm2 = 24.2 fps (+0% not changed)
• map demo2.dm2 = 22.5 fps (+0% not changed)

QUAKE2_7_20 :

• map demo1.dm2 = 24.2 fps (+1% improve)
• map demo2.dm2 = 22.5 fps (+1% improve)

QUAKE2_7_10 + soft render:

• map demo1.dm2 = 23.8 fps
• map demo2.dm2 = 22.0 fps

Full list of changes:

Quake II 7.21 to 7.30:

• Removed support for SDL 1.2.
• Removed static dependencies to libogg, libvorbis and libz.
• Fixed several bugs regarding render- and fullscreen switch.
• A lot of fixes and improvements to the software renderer. It's now able to render the whole game without artifacts and much faster than before. (by Denis Pauk)