po: attempt to fix srcdir != builddir builds
po: attempt to fix srcdir != builddir builds

The .pot, .po and .gmo files are slightly unusual in that we generate
them in the srcdir when building form git. This is because they'll be
bundled in the tar archive, so a build-from-tar will see them in srcdir.

Signed-off-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

libvirt/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,eskultety/libvirt,crobinso/libvirt,olafhering/libvirt,crobinso/libvirt,olafhering/libvirt,zippy2/libvirt,zippy2/libvirt,jfehlig/libvirt,olafhering/libvirt,libvirt/libvirt,jfehlig/libvirt,jardasgit/libvirt,crobinso/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,eskultety/libvirt,jardasgit/libvirt,jardasgit/libvirt,eskultety/libvirt,andreabolognani/libvirt,libvirt/libvirt,nertpinx/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zippy2/libvirt,libvirt/libvirt,fabianfreyer/libvirt,eskultety/libvirt,eskultety/libvirt,jardasgit/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,olafhering/libvirt,zippy2/libvirt,jfehlig/libvirt,nertpinx/libvirt,nertpinx/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jardasgit/libvirt,andreabolognani/libvirt,andreabolognani/libvirt