Add release notes for the 10.6.1 release
Add release notes for the 10.6.1 release

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
(cherry picked from commit a871e80fc6237fa029d6970f7e9b414fd097bd98)

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler