add support for mercurial tags/revs

Dependencies

• [2] C7CXMZ66 hydra: do not perform git clone every time. in stead work on local clone and pull
• [3] G7XYM6MU use local clone to limit bandwidth usage
• [4] JTRG7RDQ add support for git as jobinput
• [5] O25D52TA initial support for mercurial
• [*] OOQ2D3KC * Refactoring: move fetchInput out of hydra_scheduler into a separate

Change contents

• replacement in src/lib/Hydra/Helper/AddBuilds.pm at line 471
  [3.274]→[3.274:374](∅→∅)
  − (my $uri, my $branch) = split ' ', $value;

  − $branch = defined $branch ? $branch : "default";
  [3.274]

  [3.374]
  + (my $uri, my $id) = split ' ', $value;
• replacement in src/lib/Hydra/Helper/AddBuilds.pm at line 492
  [3.972]→[3.972:1067](∅→∅),[3.1067]→[2.1064:1140](∅→∅)
  − (my $res1, $stdout, $stderr) = captureStdoutStderr(600,

  − ("hg", "heads", $branch));

  − die "Error getting head of $branch from `$uri':\n$stderr" unless $res1;
  [3.972]

  [3.1142]
  + (my $res1, $stdout, $stderr) = captureStdoutStderr(600,("hg", "log", "-r", $id, "--template", "'{node|short} {branch}'"));

  + die "Error getting branch and revision of $id from `$uri':\n$stderr" unless $res1;
• replacement in src/lib/Hydra/Helper/AddBuilds.pm at line 495
  [3.1143]→[3.1143:1290](∅→∅)
  − $stdout =~ m/[0-9]+:([0-9A-Fa-f]{12})/;

  − my $revision = $1;

  − die "Could not determine head revision of branch $branch" unless $revision;
  [3.1143]

  [3.1290]
  + my ($revision, $branch) = split ' ', $stdout;