- 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)

loading float constants for GLSL.

- DrawPrim is just too big of a function.  This separates the passing
  of constants to the shader into new functions.
- Fixes an off-by-one error when loading vertex declaration constants
  (should be <, not <=)
- Adds a function for GLSL loading of constants (aka Uniforms)
- Adds a GLSL program variable to the stateblock and sets it to 0 (a
  future patch will actually create this program)

Return FALSE in the WM_CLOSE PROPSHEET_DialogProc handler in order to
allow DefDlgProc to post us WM_COMMAND/IDCANCEL and unblock modal
message loop.