app-emulation/qemu: add qemu to improve streamOptimized vmdk support for VMware OVF

[higebu]

Fixes coreos/bugs#176.

I added the patch to improve streamOptimized vmdk support.
If we don't use it, we can't deploy OVF to ESXi or vCenter.

For more details:
http://lists.gnu.org/archive/html/qemu-devel/2014-07/msg01151.html

[higebu]

This PR is related to coreos/scripts#362.

[marineam]

Overall style wise, could you prune extra bits like the Gentoo ChangeLog and the live (-9999) ebuild? They just add clutter making it harder to see what the exact local changes are and the live ebuild can continue to live in the portage-stable repo.

On the patch itself, could you include the original commit message and a link in header? As is it isn't obvious which revision of the patch you used, the last appears to be this one: http://lists.gnu.org/archive/html/qemu-devel/2014-08/msg01028.html

It is a rather large patch for code that I don't understand and unfortunately never finished review so I'm a little reluctant to accept it unless it gets back on track to merge upstream. I assume the author has moved on but it would be worthwhile to track down Milos Vyletel to see if he intends to finish it or if the patch needs a new champion to finish it. The final round of comments seem relatively strait forward so hopefully there isn't much left to do. http://lists.gnu.org/archive/html/qemu-devel/2014-08/msg02809.html

[higebu]

Thank you for your review.
Changes are following:

• Use v3 patch.
• Add original commit message and link to patch.
• Remove ChangeLog, qemu-9999.ebuild and metadata.xml.
• Generate Manifest.

I hope that Milos Vyletel gets back and his patch is merged to upstream too.

[marineam]

Thanks for working on this but VMware is providing a different tool to create the proper VMDK format and OVA which should be a better way forward than this patch.

#1015

[higebu]

I didn't know open-vmdk project. I think VMware's PR is better than this too.
Thanks!