2001-07-23  Chema Celorio  <chema@celorio.com>

	* src/glade-xml-utils.c (glade_xml_doc_save): when saving a .xml file indent
	it as libxml did by calling SaveFormatFile and xmlKeepBlanksDefault.

	* src/glade-xml-utils.h: hide the libxml internals (remove headers from the
	.h file and into the .c file. Update all the code to not deal with libxml
	structs directly. Changed the while loops that generated libxml nodes to for
	loops. remove the skip_text macro and add glade_xml_node_is_comment so that
	we can test the node for a node we should ignore (in the for loops).