api cleanup: split part of BM_face_create_ngon_vcloud() into a new function BM_face_create_ngon_verts(),
a function to create a bmesh face from an ordered vertex array, optionally creating edges and calculating winding.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55614 954f8c5b-7b00-dc11-b283-0030488c597c