so remove the case for it being NULL.

tell the RPC runtime that the call failed.

CoRevertToSelf on top of CoGetCallContext, which is a stub.

- Based on comments from H. Verbeet
- Changed the distinction from .rgba & .xyzw masks to only use .xyzw
  in GLSL shaders.  They are interchangeable, and only served to make
  the trace look more intuitive, but they don't always apply as-is, so
  we'll just leave everything to .xyzw.
- Got rid of the "UseProgramObjectARB(0)" call in drawprim.  If there
  is no shader set on the next primitive, then that primitive will
  call UseProgramObjectARB(0) when it begins to draw.

could end up using the previously allocated memory even if it isn't
the right size, causing heap corruption.

rpcrt4: Initialise pStubMsg->MemorySize to zero before calling ComplexStructMemorySize from NdrComplexArrayUnmarshall.

need to copy the FromConn field when copying bindings.

rpcrt4: Return the status received from RPCRT4_Send in I_RpcSend instead of always returning RPC_S_OK.

passed in to CreateWindow menu should be handled.

- Add functions to attach & detach shader objects, create and delete programs, and maintain the list of programs.
- Add a list of GLSL shader programs to the device which is initialized on Init3D(), and deleted on Release().

- Declare more variable names for GLSL programs.
- Some of these won't need to be declared eventually, but it doesn't hurt to do it for now.
- Correct output name for pixel shaders (gl_FragColor instead of glFragColor).

- Got rid of the separate constant maps.
- Side effect of this is that the map is a bit larger for pixel shaders than it needs to be

- Add a new file glsl_shader.c which contains almost every GLSL specific function we'll need
- Move print_glsl_info() into glsl_shader.c
- Move the shader_reg_maps struct info into the private header, and make it part of SHADER_OPCODE_ARG.
- Create a new shared ps/vs register map for float constants (future patch will make ARB programs use this, too)