* Makefile.am: add "check" to the default target when compiling from
	CVS
	* freedesktop.org.xml.in: Change application/x-jar to the SUN-
	recommended application/x-java-archive, add an alias for the former,
	Add better conditional magic to tell zip files and .jars apart,
	Thanks to Joseph Kowalski <jek3@eng.sun.com> for his detailed report
	(Closes: #7852)