phases: update the phase set as we go during retract boundary
Apparently iterating over the `changed_revs` dictionary is very expensive.
On mozilla-try-2019-02-18, a perf::unbundle call with a 10 000 changesets
bundle gives give use the following timing.
e57d4b868a3e: 4.6 seconds
ac1c75188440: 102.5 seconds
prev-changeset: 30.0 seconds
this-changeset: 4.6 seconds
So, the performance regression is gone.
Once again: thanks to marvelous Python!
$ hg init test
$ cat >hgweb.cgi <<HGWEB
> #!$PYTHON
> from mercurial import demandimport; demandimport.enable()
> from mercurial.hgweb import hgweb
> from mercurial.hgweb import wsgicgi
> application = hgweb(b"test", b"Empty test repository")
> wsgicgi.launch(application)
> HGWEB
$ chmod 755 hgweb.cgi
Check that non-ASCII bytes roundtrip correctly.
$ . "$TESTDIR/cgienv"
$ PATH_INFO="/rev/$(python -c 'import sys; sys.stdout.buffer.write(b"\xe2\x80\x94")')"; export PATH_INFO
$ QUERY_STRING="style=raw"; export QUERY_STRING
$ "$PYTHON" ./hgweb.cgi | grep error
error: unknown revision '\xe2\x80\x94' (esc)