Log Message:
Update to 1.12.1:
Dom:
	* Better handling of error conditions when creating a zip.

Jody:
	* Patch a leak in vector properties from OLE2.
	* Be more delicate handling truncated gzip files.
	* Improve utility macros for dynamic type creation (incompatible).
	* Make constructors for output_stdio outfile_stdio more flexible

Morten:
	* Fix gsf_xml_out_add_float to always use "." as separator.
	* Fix problem with creating new files in g+s directories.