[libvirt] [PATCH] build: fix compilation on mingw64

[Eric Blake]

* .gnulib: Update to latest, for getcwd fixes.
---

Spurred by a gnulib bug report by Marc-André Lureau.

Fedora currently uses the mingw32 cross-compiler, but is aiming to
switch to the mingw64 cross-compiler; once that is done, failure
to upgrade gnulib would trip up cross-compilation during ./autobuild.sh.

* .gnulib 4470580...56d6664 (21):
  > getcwd: fix test failures on mingw
  > getcwd-lgpl: fix m4 to match relaxed test for BSD
  > getcwd: fix compilation on mingw64
  > pipe2: silence compiler warning
  > autoupdate
  > relocatable-prog: fix link error
  > getaddrinfo: fix sh typo in gai_strerrorA decl checking
  > base64: Reference latest RFC.
  > * build-aux/bootstrap (slurp): Remove obsolescent gettext.m4 patch.
  > po/Makefile.in.in: fix make -q problem
  > configmake: fix make -q problem
  > git-version-gen: correct the advice in a comment
  > base64: fix off-by-one buffer size bug
  > closein: correct comments
  > More tests for 'fseeko'.
  > ChangeLog: fix wrong attribution in last commit
  > fseeko: remove unneeded hack
  > fseeko: fix bug on glibc
  > unictype/base: Fix interoperability with preinstalled libunistring.
  > iswblank: Detect declaration correctly.
  > tcgetsid: Detect declaration correctly.

 .gnulib |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/.gnulib b/.gnulib
index 4470580..56d6664 160000
--- a/.gnulib
+++ b/.gnulib
@@ -1 +1 @@
-Subproject commit 4470580881a7b821b52fb5635102ef3e27aa5af4
+Subproject commit 56d6664559f449af25f0d331457b014b02324d65
-- 
1.7.4.4