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outdated Mercurial.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.
https://bz.mercurial-scm.org/1089
$ hg init
$ mkdir a
$ echo a > a/b
$ hg ci -Am m
adding a/b
$ hg rm a
removing a/b (glob)
$ hg ci -m m a
$ mkdir a b
$ echo a > a/b
$ hg ci -Am m
adding a/b
$ hg rm a
removing a/b (glob)
$ cd b
Relative delete:
$ hg ci -m m ../a
$ cd ..