Moved transform ops from parser to create_object.

The rotate, translate, and scale transforms were separated from the
parser and moved to create_object.c.
Renamed parser state variables.

The parser state variable names, mpvp and mdlpvp, would likely be
confusing to new developers, so they were renamed.
Fixed inaccurate function comments.

Fixed some of the parameters listed in the function comments. Also,
removed an unused function declaraton.
Decoupled region release site creation from parser
More work on decoupling release site creation.