i18n: update Report-Msgid-Bugs-To property of *.po files This patch replaces domain of mercurial-devel ML address by mercurial-scm.org for "Report-Msgid-Bugs-To" property of each *.po files. This avoids releasing 4.1.1 with invalid "Report-Msgid-Bugs-To" in *.mo file, if corresponded *.po file isn't msgmerge-ed with recent hg.pot by translator. These *.po files aren't covered by check-code.py pattern newly added in subsequent patch, because it ignores them.

misc: replace domain of mercurial ML address by mercurial-scm.org This patch also adds new check-code.py pattern to detect invalid usage of "mercurial@selenic.com". Change for test-convert-tla.t is tested, but similar change for almost same test-convert-baz.t isn't yet tested actually, because I couldn't find out the way to get "GNU Arch baz client". AFAIK, buildbot skips test-convert-baz.t, too. Does anybody have appropriate environment for testing?

commandserver: prevent unlink socket twice This patch changes unixforkingservice so it only calls `self._servicehandler.unlinksocket(self.address)` at most once. This is needed by the next patch.