Create tag for v1.6.4

create tag for v1.6.3 stable

create tag for 1.6.2 stable

create tag for 1.6.1.4235

create tag for 1.6.0.4014

tag v1.5.2.3456 release

Sandy Bridge patch

Fix : crash on Sandy Bridge processor

create v1.5.0 tag from r2827 along with r2834

bump version to 1.5