clone: add a server-side option to disable full getbundles (pull-based clones)
For large enough repositories, pull-based clones take too long, and an attempt
to use them indicates some sort of configuration or other issue or maybe an
outdated Mercurial. Add a config option to disable them.
#require docutils gettext
$ $TESTDIR/check-gendoc zh_TW
checking for parse errors