Fix white flash levelshot bug in OpenGL1

If you tried to draw the last loaded image, gl texture 0 (which is appearently white)
was used because renderer thought the image was already bound.

Why OpenGL1 renderer binds texture 0, I have no idea. It's been removed from OpenGL2.
r_noborder changes require a restart
Add latch to r_centerWindow and r_allowResize
Support spatialized raw streams in base sound, e.g. for VoIP
Have ui_test cmd in missionpack ui return qtrue
Fix checking if MP dylibs exist in make-macosx-app.sh
Fix some file paths for msvc 2008
OpenGL2: Support GL_ARB_vertex_type_2_10_10_10_rev for normals/tangents/lightdirs
Fix crash in OpenAL when no input devices are available
OpenGL2: Small glsl shader optimizations, fixes, and cleanup.
Fix playback of stereo sounds in Base sound system

Already works correctly in OpenAL.
#6077: OpenGL2: Add r_ignoreDstAlpha.