Build: Localize build timestamp timezone

Use a daylight savings time aware timezone string, because Travis CI builds kept setting
the timestamp values to GMT
Fixes gh-2546
Added the timezone identifier
Merge pull request #2556 from LaurentGoderre/fix-build-tstamp-offset-2546

Fix build tstamp offset 2546
Merge branch 'v3.0'
Merge branch 'master' of https://github.com/wet-boew/wet-boew into printhandling
Fixed print handling.