speedup for editmesh getVert and getEdge, were doing 2x customdata layer lookups for crease and bevel weight, also make use of the existing meshdata array for lookups.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53687 954f8c5b-7b00-dc11-b283-0030488c597c