parsers: fix 'unsigned expression is always true' warning (issue4142) On Mac OS gcc-llvm throws an -Wtautological-compare warning because flen is defined as an unsigned integer, therefore flen < 0 is always true.

wix: pull in new templates

phase: properly compute ancestors of --rev on push (issue3786) Now that discovery is working on unfiltered changeset, I had a good occasion to look at that bug again. This let me realise that a trivial node vs rev comparision was the cause of this two years old bugs… Happy second birthday phases!