Raised SVGA3D_MAX_SHADER_IDS from 0x100 to 0x800.
DevVGA-SVGA3d-ogl.cpp: Attempt to deal with annoying assertions in for example vmsvga3dSurfaceStretchBlt after surfaces have been ophaned by vmsvga3dContextDestroy.
vmsvgaGMRTransfer: Display detail in buffer overflow assertions.
VMSVGA3d: Cleaning up some of the dual-profile mess, switched back to using the 2.1 profile by default.
build fix
Use a context configured with the legacy OpenGL profile for getting information not available when using the OpenGL32Core profile.
Devices/vmsvga: header fixes