Merge branch 'ad/5580-unc-tests-on-cygwin' into maint

UNC paths are also relevant in Cygwin builds and they are now tested just like Mingw builds. * ad/5580-unc-tests-on-cygwin: t5580: add Cygwin support

Junio C Hamano committed Nov 15, 2017 at 12:05 UTC 934e330c9d0d12f7a0dd82b9699456c891e4dd4a

No changes.