emulators/qemu-devel port update (bsd-user, clang)

[Juergen Lock]

Hi!

 I'm currently waiting for redports to come back and build the following
update, in case anyone wants to already test it...

	http://people.freebsd.org/~nox/tmp/qemu-devel-1.4.0_1-001.patch

 Log:

- Update to sson's latest bsd-user patches.
- Turns out qemu 1.4.x now builds with clang as is, so remove CLANG_HACK [1]
- Bump PORTREVISION.

Noticed by:	Brad Smith <brad at comstyle.com> [1]

 Thanx! :)
	Juergen