code cleanup: lots of calls to BKE_mesh_calc_normals_mapping were not using the mapping functionality.
replace ED_mesh_calc_normals with BKE_mesh_calc_normals().


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@57081 954f8c5b-7b00-dc11-b283-0030488c597c
Cycles: normal maps are now backwards compatible again after recent fix, with
a separate Blender Object/World Space that is compatible with Blender render
baking and uses the YZ flipping convention.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@57082 954f8c5b-7b00-dc11-b283-0030488c597c