[aur-general] Merge request for [xen-4.3].

[Evan Teitelman]

Please merge xen-4.3[1] into xen-4.3-git[2].

Reasoning:
- There are only minor differences between the two PKGBUILD files.
- Both packages retrieve their sources with Git.
- Both packages were submitted by the same user, suggesting that the
uploading of xen-4.3-git was a rename attempt.
- xen-4.3 is unmaintained.

[1] https://aur.archlinux.org/packages/xen-4.3
[2] https://aur.archlinux.org/packages/xen-4.3-git/