Bug fix #1955

Another tweak in the convex formula, replaced a ">" with ">=" for detecting
optimal projection of face in 2d. Solves issue reveiled in Bevel tool,
where it could happen that a face wasn't created.

source/blender/src/editmesh_tools.c

@@ -3356,7 +3356,7 @@ void bevel_mesh(float bsize, int allfaces)
 	removedoublesflag(1, limit);
 
 	/* flush selected vertices to edges/faces */
-	EM_select_flush();
+	EM_selectmode_set();
 
 #undef BEV_DEBUG
 }