Revert "Prefer ejabberd for the Jabber modules"

This reverts commit 0f20ea01b111545ea9d81795731f3b7105f642d9.

Conflicts:
	py-jabber-aimt/Makefile
	py-jabber-icqt/Makefile
	py-jabber-proxy65/Makefile
Merge branch 'joyent' of github.com:joyent/pkgsrc-wip into joyent