app-emulation/libvirt-9999: Update hash generation algorithm

I've noticed that bootstrap is run twice. This is because the
first time it is run in src_prepare() and there some hash is
computed so later when src_configre() gets its word it'll find
everything prepared. Well, in the upstream commit of
6d53255377b50b7e412350d079 the hash was changed therefore
src_configure() did not find the expected hash and thus re-ran
the bootstrap script.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Matthias Maier <tamiko@gentoo.org>

app-emulation/libvirt/libvirt-9999.ebuild

@@ -226,8 +226,9 @@ src_prepare() {
 		# bug #377279
 		./bootstrap || die "bootstrap failed"
 		(
-			git submodule status | sed 's/^[ +-]//;s/ .*//'
-			git hash-object bootstrap.conf
+		    git submodule status .gnulib | awk '{ print $1 }'
+		    git hash-object bootstrap.conf
+		    git ls-tree -d HEAD gnulib/local | awk '{ print $3 }'
 		) >.git-module-status
 	fi