plan9: add execute permissions to 9diff

transplant: permit merge changesets via --parent This change permits the transplant extension to operate on merge changesets by way of --parent. This is particularly useful for workflows which cherrypick branch merges rather than each commit within a branch.

help: fix indentation on cacert (issue3350) The parser doesn't really handle nesting, so reorder so the nested bit is last.

stream_in: avoid debug calls when debug is disabled

util: create bytecount array just once This avoids tons of gettext calls on workloads that call bytecount a lot.

revset: avoid set duplication in roots()

revset: retrieve a bit less parents in roots()

revset: do not ignore input revisions in roots() 0329d3b12d8e is also partially reverted to use the 'narrow' parameter again and make less changesets parents lookups.

util.h: more Python 2.4 fixes

dispatch: add support for statprof as a profiler This can be selected using the config variable profiling.type or the environment variable HGPROF ("ls" for the default, "stat" for statprof). The only tuneable is the frequency, profiling.freq, which defaults to 1000 Hz. If statprof is not available, a warning is printed.