2009-01-24  Hans Breuer  <hans@breuer.org>

	* lib/message.[ch] lib/libdia.def : new function dia_log_message() 
	which prints the given string together with a time-stamp, but only 
	if logging is enabled
	* app/app_procs.c lib/dialib.[ch] : when given --verbose enable logging
	* lib/plug-ins.c lib/sheet.c : sprinkled some dia_log_message() to get
	a grip on Dia's start-up performance (4 secs for python plug-in, 5 secs
	for custom plug-in - when started from cold caches)
	

svn path=/trunk/; revision=4230