add ogm extention mime-type..

[git-p4: depot-paths = "//depot/": change = 744]

pymediaserv

@@ -82,6 +82,7 @@ medianode.contentTypes.update( {
 	'.ts':	'video/mpeg',	# we may want this instead of mp2t
 	#'.mp4':	'video/mp4',
 	'.mp4':	'video/mpeg',
+	'.ogm':	'application/ogg',
 })
 root.putChild('media', medianode)