Fix another message about credit limits.
Merge branch 'ncn-devel' into dinglist-cleanup

Conflicts:
	gui/money_frame.cc
Further instrumentation for debugging.
Fix function prototypes
Merge branch 'ncn-devel' into dinglist-cleanup
Merge branch 'dinglist-cleanup' of git://github.com/neroden/simutrans.git into dingliste-cleanup