code cleanup: use const's for static arrays


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60672 954f8c5b-7b00-dc11-b283-0030488c597c
fix [#37031] bones are not selectable in weight paint mode anymore


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60673 954f8c5b-7b00-dc11-b283-0030488c597c