2011-07-27 Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/xml-sax-read.c (xml_sax_print_comments): new
	(xml_sax_print_errors): new
	(gnumeric_1_0_dtd): connect the above
	* src/xml-sax-write.c (xml_write_print_info): write comment placement
	and error display