Be a little more careful about the use of SSE.
We really need to adopt the GCC model of one instruction set
per compilation unit.
If perspective divide is enabled and texture coordinate Z is 0 then leave texture coordinates alone. Fixes issue 3676.
The OS X build now requires a little less compiler/linker magic
to maintain 10.5 runtime compatibility.
Explicit dependency on libvideo.
Back out r6960 for now. The wxGLCanvas may need to be persistent
and owned by DolphinWX in the rendertomain case.
Remove vertex format converter from software plugin because it is not needed as of r6881. Maybe fix z range adjustment.
r6958 removes the need for the hackery in r6946.