i18n: extract doc string of each web commands as translatable one Before this patch, doc string of each web commands isn't extracted as translatable one, even though web commands are listed up in "hg help hgweb". This patch adds "mercurial/hgweb/webcommands.py" on to arguments of "i18n/hggettext". "i18nfunctions" added into "webcommands.py" is used by "i18n/hggettext" to get the list of functions having translatable doc string.