[libvirt] [PATCH] build: fix bootstrap with older autoconf

[Eric Blake]

Pavel Hrdina reported to me off-list that my gnulib update on
Jan 1 broke the build on RHEL 6.4 and older:

    executing aclocal -I glm4
    glm4/gl-openssl.m4:11: error: m4_defn: undefined macro: _m4_divert_diversion
    glm4/gl-openssl.m4:11: the top level
    autom4te: /usr/bin/m4 failed with exit status: 1
    aclocal: autom4te failed with exit status: 1

It took me a while, but I fixed the regression in gnulib.

* gnulib: Update to latest, for buid fixes.

Signed-off-by: Eric Blake <eblake at redhat.com>
---

Pushing under the build-breaker rule.

* .gnulib c7802e2...5a7fe2f (12):
  > md5, sha1, sha256, sha512: support older autoconf
  > include_next: port to autoconf 2.63
  > maint: add a gnulib-local rule to keep non-ascii out of .texi files
  > freadable, fwritable, fwriting: declare with the "pure" attribute
  > maint.mk: adapt openat.h-include-without-use test
  > doc: use ASCII in .texi files where UTF-8 isn't needed
  > freading: declare with attribute "pure"
  > manywarnings: remove -Wmudflap
  > autoupdate
  > relocatable-script: remove unused code
  > maint: fix public-submodule-commit to work with newer git
  > autoupdate

 .gnulib | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gnulib b/.gnulib
index c7802e2..5a7fe2f 160000
--- a/.gnulib
+++ b/.gnulib
@@ -1 +1 @@
-Subproject commit c7802e2b418c40fa2bd270cf241314d0c8433a26
+Subproject commit 5a7fe2fe76d74d2cad663018bdf6ed40a90f085e
-- 
1.8.4.2