2004-07-04  Hans Breuer  <hans@breuer.org>

	* lib/persistence.c app/load_save.c app/sheet_dialog_callbacks.c
	  lib/object_defaults.c : revert changing of Dia's XML namespace
	* lib/dia_xml.h : #define DIA_XML_NAME_SPACE_BASE with a comment
	about its purpose and relation to real world urls.

	* lib/plug-ins.h : increment DIA_PLUGIN_API_VERSION and
	added comment about when to o so
	[Should have been long time ago and probably multiple times
	to avoid crashing on older plug-ins]
	* RELEASE-PROCESS : mention DIA_PLUGIN_API_VERSION
	* plug-ins/xslt/xslt.c : use DIA_PLUGIN_CHECK_INIT

	* lib/object.c objects/UML/class.c : there are still compilers not
	supporting C99 and other GCCISMs like allocating dynamic sized arrays
	on the stack
	* objects/UML/class.h : there is a differnce between a list pointer
	and a list pointer pointer. We and GLib want the former.

	* plug-ins/pixbuf/pixbuf.c : don't use app_is_interactive () to detect
	if Gt...