glave: Clean up codegen of glvreplay_xgl_replay.h.

glave: Clean up codegen of glvreplay_xgl_replay.h.

* The codegen'd part of the the xglReplay header was all related to remapping objects between the trace and replay. So I split that functionality into an xglReplayObjMapper class which is entirely codegen'd. The xglReplay class now has an instance of this class, which allows the xglReplay class to no longer need to be codegen'd.
* Update all calls to add_to_map(..), rm_from_map(..), and remap(..) to be called on the new m_objMapper member of xglReplay.
* The xglReplay class that used to be codegen'd into glvreplay_xgl_replay.h is now in glvreplay_xgl_xglreplay.h and is no longer codegen'd.