build perl-xml for the desktop target

git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@2159 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc

target/desktop/config.in

@@ -63,6 +63,7 @@ pkgfilter sed '
 
 # mnemoc repository
 / openldap /	{ p; d; };
+/ perl-libxml /	{ p; d; };
 
 # kasc repository  - (mostly) games
 / kasc /        { p; d; };