mesa: disable glthread when glNewList() is called
mesa: disable glthread when glNewList() is called

glNewList() swaps dispatch tables, and we don't have anything in
place to handle that in glthread.

Tested-by: Michel Dänzer <242b79f0804cf52679d58f27ed754158c1323c75@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler