This reverts commit 8044c11e.

This patch advertises all GL reported float uniforms to the D3D app to
reach the 256 constants required by Shader Model 3.0 on dx9 cards. If
the shader does not use indirect addressing, all 256 constants are
declared. The compiler can then figure out which constants are
actually used. This makes shaders work that use high constant indices,
but don't use all 256 constants.

DX10 cards support 512(ATI) or 1024(Nvidia) vertex shader constants in
GL. The dx9 DXCapsViewer shows that dx10 windows drivers only claim
256 constants on Windows, so we can and should do the same.