if we don't find anything, print a warning and continue, don't

stop..

[git-p4: depot-paths = "//depot/": change = 771]

FSStorage.py

@@ -99,7 +99,8 @@ def dofileadd(cd, parent, urlbase, path, name):
 	elif mimetoklass.has_key(ty):
 		klass = mimetoklass[ty]
 	else:
-		raise KeyError, 'no item for mt: %s' % mt
+		log.msg('no item for mt: %s' % mt)
+		return
 
 	return cd.addItem(parent, klass, name, urlbase = urlbase,
 	    path = os.path.join(path, name), mimetype = mt)