buildbot: retrieve short commit hash properly
authorFernando Carmona Varo <ferkiwi@gmail.com>
Sun, 24 Jul 2016 12:01:20 +0000 (14:01 +0200)
committersfan5 <sfan5@live.de>
Thu, 28 Jul 2016 22:20:54 +0000 (00:20 +0200)
commit6b74e196aec228aa0de8852f784f4bc8904c14e2
tree9b27d1bf4548e3b53008ca73458d144cad2254d0
parent919d9d791c7dd2336792c5569a0604b062c8adc8
buildbot: retrieve short commit hash properly

Instead of trying to manually parse the output of 'git show' which can be different across different git configurations, properly use the 'git rev-parse' command that is intended for this purpose.
util/buildbot/buildwin32.sh
util/buildbot/buildwin64.sh