fix for buildsteps starting at 0, probably something changed in catalyst

Dependencies

• [2] MPGVCHVF * Fix an apparent incompatibility with recent DBIx::Class.
• [3] BOFOHCPK removed debug print, added last 50 lines in failure emails
• [4] G5A7TZVI * Don't discard old build steps when restarting a build.
• [5] CLJQCY2X * Store info about all the build actions and allow them to be
• [6] A63IHCMX * Register GC roots properly.
• [7] FYO6NECE hydra
• [*] 7YBYT2LQ

Change contents

• replacement in src/script/hydra_build.pl.in at line 247
  [2.115]→[2.115:185](∅→∅)
  − my $buildStepNr = defined $max ? $max->get_column('max') : 1;
  [2.115]

  [3.5140]
  + my $buildStepNr = (defined $max && defined $max->get_column('max')) ? $max->get_column('max') : 1;