maint: Update to latest gnulib

This pulls in, among other new things, vc-list-files fix to make
syntax-check work with git worktrees.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Erik Skultety committed 2017-08-28 12:12:51 +02:00
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commit 30fca06a11
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Submodule .gnulib updated: ce4ee4cbb5...8d116e3f65.