Remove paranoid null checks for editmesh EDBM_vert_at_index and friends (use asserts instead).
temp set BM_OMP_LIMIT to zero for better testing before release.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@57583 954f8c5b-7b00-dc11-b283-0030488c597c