Add release notes for the 10.2.9 release
Add release notes for the 10.2.9 release

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
(cherry picked from commit 9f1149876f2d010c871751a53d02d4d2b6aef1fe)

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler