Merge branch 'sg/travis-gcc-4.8'

Add a job to build with a tad older GCC to make sure we are still buildable. * sg/travis-gcc-4.8: travis-ci: build with GCC 4.8 as well

Junio C Hamano committed Jul 29, 2019 at 12:39 UTC 995ec8a18f60c23b80ae7ed84f8c921652a6ebb3

No changes.