src/modulemgr/modulemgr.c: Added __StopModule().
src/modulemgr/modulemgr.c: Added _PrologueModule().
src/modulemgr/modulemgr.c: Added _ModuleRegisterLibraries().
src/modulemgr/modulemgr.c: Fixed error in _ModuleReleaseLibraries().
Moved NID_MODULE_* NIDs from src/loadcore/nid.h -> include/modulemgr_nids.h.
src/modulemgr/modulemgr.c: Added _ProcessModuleExportEnt().