[GL 4.1] Separate Shader Objects

http://www.opengl.org/registry/specs/ARB/separate_shader_objects.txt

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Create new enum ProgramStageBitfield and add:

VERTEX_SHADER_BIT 0x00000001
FRAGMENT_SHADER_BIT 0x00000002
GEOMETRY_SHADER_BIT 0x00000004
TESS_CONTROL_SHADER_BIT 0x00000008
TESS_EVALUATION_SHADER_BIT 0x00000010
ALL_SHADER_BITS 0xFFFFFFFF

Add to BOTH enums
ProgramParameter and
AssemblyProgramParameterArb

PROGRAM_SEPARABLE 0x8258

Create enum and add GetProgramPipelineParameter:

ACTIVE_PROGRAM 0x8259

Add to enum GetPName:

PROGRAM_PIPELINE_BINDING 0x825A

Functions:

Old: void UseProgramStages(uint pipeline, bitfield stages, uint program);
New: void UseProgramStages(uint pipeline, ProgramStageBitfield stages, uint program);

Old: uint CreateShaderProgramv(enum type, sizei count, const char **strings);
New: uint CreateShaderProgramv(ShaderType type, sizei count, const char **strings);

Note: This function also appears in #2056: [GL 4.1] Get Program Binary
Old: void ProgramParameteri(uint program, enum pname, int value);
New: void ProgramParameteri(uint program, AssemblyProgramParameterArb pname, int value);

Old: void GetProgramPipelineiv(uint pipeline, enum pname, int *params);
New: void GetProgramPipelineiv(uint pipeline, GetProgramPipelineParameter pname, int *params);