[libvirt] [PATCH] maint: update gnulib

[Eric Blake]

In particular, this incorporates Roman's patches to allow
'make syntax-check' to work on BSD with its exec argv
limitations that previously failed when trying to grep the
large number of files present in libvirt.

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

Really just two changes since the new year copyright update,
but posting for review to make sure this works on BSD boxes.

* .gnulib 4652c7b...7216e3e (2):
  > maint.mk: Replace grep with $(GREP)
  > maint.mk: Split long argument lists

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

diff --git a/.gnulib b/.gnulib
index 4652c7bafa..7216e3e8d9 160000
--- a/.gnulib
+++ b/.gnulib
@@ -1 +1 @@
-Subproject commit 4652c7bafa60332145f1e05a7de5f48e1bc56226
+Subproject commit 7216e3e8d9f914d216fb10abf7dbeafa6570eb87
-- 
2.20.1