Merge branch 'nd/travis-gcc-8'
authorJunio C Hamano <gitster@pobox.com>
Wed, 30 May 2018 05:04:08 +0000 (14:04 +0900)
committerJunio C Hamano <gitster@pobox.com>
Wed, 30 May 2018 05:04:08 +0000 (14:04 +0900)
Developer support. Use newer GCC on one of the builds done at
TravisCI.org to get more warnings and errors diagnosed.

* nd/travis-gcc-8:
travis-ci: run gcc-8 on linux-gcc jobs

Trivial merge