[Ohrrpgce] SVN: teeemcee/10604 Don't rebuild nightlies if there are no new svn revisions

[subversion at HamsterRepublic.com]

teeemcee
2018-09-06 07:36:30 -0700 (Thu, 06 Sep 2018)
269
Don't rebuild nightlies if there are no new svn revisions

distrib-nightly-max.sh used to do this, but it turns out it has been building
unconditionally since 2016, when the output of svn changed!

I did not change distrib-nightly-android.sh, since it uses git, not svn
---
U   wip/distrib-nightly-linux.sh
U   wip/distrib-nightly-mac.sh
U   wip/distrib-nightly-win.bat
U   wip/distrib-nightly-wine.sh