build: Add -Werror=undef by default, fix fallout

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The main thing here is that a ton of stuff has happened in gnulib since we
imported `parse-datetime.y`. I cherry-picked a little bit of it, but that
upstream doesn't seem to build with `-Wundef`, so I just deleted some hunks.

(Note I reindented the warnings consistently)

Update submodule: libglnx

Closes: #1320
Approved by: jlebon

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Colin Walters authored and Atomic Bot committed 2017-11-06 15:30:14 +00:00

1 parent 2e9fea8fa5

commit 7296bf3dcc

4 files changed

+34 -77

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libglnx

+1 -1

Submodule libglnx updated: d15a379007...b36606b366.