Initial Doxygen generated Regal manual - work in progress.
Enable GL_CLAMP on ES2.0/3.0 and core GL contexts by remapping to equivalent GL_CLAMP_TO_EDGE
Add emulation support for glInterleavedArrays().
Add emulation support for DSA VertexArray*OffsetEXT routines.
RegalUtil.h namespace macros moved to RegalNamespace.h