message: Detect renames in branch-history
  Reduce false positives when renaming/moving large files.
diff: @@ -103,7 +103,7 @@ sub formatSize {
  # Loop over each commit in this branch, and check for large diffs
  my $total_size = 0;
  foreach my $sha (@commits) {
  - my @blobs = `git diff-tree -r -c --root --no-commit-id $sha`;
  + my @blobs = `git diff-tree -r -c --root --no-commit-id --find-renames $sha`;
  my $nfiles_changed = scalar @blobs;
  if ($nfiles_changed > $commit_max_files_changed) {
  printf STDERR
  @@ -133,7 +133,8 @@ foreach my $sha (@commits) {
  elsif ($mode eq "D") { }
  # File was modified, use the gzip'ed diff as a proxy of the required git storage
  elsif ($mode =~ m/M\d*/) { $blob_size += int(`git diff -U0 --binary $src $dst | gzip -c | wc -c`); }
  - elsif ($mode =~ m/R\d*/) { }
  + # File was renamed (at least 50% similarity)
  + elsif ($mode =~ m/R\d*/) { $blob_size += int(`git diff -U0 --binary $src $dst | gzip -c | wc -c`); }
  elsif ($mode eq "T") { }
  elsif ($mode eq "U") { }
  else { die "Unknown git status letter." }
  