VERSION: Increment to 11.23
CHANGE: Improve performance when large number of convoys are loading at stops (TurfIt)
Merge branch '11.x' into 12.x

Conflicts:
	simversion.h
Merge branch '12.x' into devel-new
Merge branch 'devel-new' into 112.5-merge
Enhanced: Load/Save frame now uses cached save game info in extended sve_info_t