Doxygen for message classes in the NetworkEngine. Doxygen for connection
classes.

Change-Id: Ieffbde7babebca11ef9d33caf1909931284d7f4b
Add Dowygen for RawStruct class.

Change-Id: Ie384885257db5bc46217fe828655c4fdf833b381
Partial support for restriction.

Change-Id: I12dd31e9c41ff513e57adaea0a6dcc185d44ee30
CPMCreateQueryIn support.

Change-Id: I8df3019e3e5f6b739a2a45d3ced61f4deeef0998
Support for more restriction data structure.

Change-Id: Ia821ab8947ac779208cdf053914f0ae9bf26c2cd