Blender Git Loki

-- Fix for the "LIB ERROR: base removed" problem; BPy Object was decrementing
us.id when objects were destroyed but not always incrementing when
created. The intent of modifying us.id is to make Python a "user" of the
data so it persists even when it is deleted from Blenders UI. The original
commit was unintentional but Ton thought the idea was OK.