wip: backport vertex shader to arb assembly
get it working.
tear out glsl stuff
don't skip vbo check
allow disabling vp
tidy shader files
memory saving: store the normals in a signed char[4]
bump version to 0.90.1

git-svn-id: svn+ssh://svn.code.sf.net/p/quakespasm/code/trunk@1131 af15c1b1-3010-417e-b628-4374ebc0bcbd
Merge branch 'master' into vp
Factor out shader test into GLAlias_SupportsShaders
Create shader in GL_Init
Use temporary mallocs in GLMesh_LoadVertexBuffers
Coding style & comments
Coding style for GL_ARB_vertex_program function pointers
Delete shader before generating new ones
Fix a typo
Comments & formatting
Fix crash with -novertexprogram
Tweak comments
more comment tweaks
Merge branch 'master' into vp
fix comment
Merge branch 'vp' into alias5

Conflicts:
	quakespasm/Quake/r_alias.c