evolve: kill `--obsolete` and `--old-obsolete` flags for graft
Evolve extension used to add the couple of flags to `hg graft` command for
reasons I don't know but they were deprecated. For the functionality of `hg
graft --old-obsolete`, we have `hg grab` now which can do that.
One more reason to kill this is that we have logic to parse the graftstate,
whereas in core, we are going to change how state files are read and write.
Tweaked the tests a bit to use `hg grab` instead of these flags to make rest of
the test output consistent. Replaced an entry of `hg graft -O` in doc by `hg
grab`.
testing topic with shelve extension
------------------------------------
$ . "$TESTDIR/testlib/topic_setup.sh"
$ hg init repo
$ cd repo
$ cat <<EOF >>.hg/hgrc
> [extensions]
> shelve=
> EOF
$ touch a
$ echo "Hello" >> a
$ hg topic "testing-shelve"
marked working directory as topic: testing-shelve
$ hg topic
* testing-shelve (0 changesets)
$ hg ci -m "First commit" -A
adding a
active topic 'testing-shelve' grew its first changeset
$ hg topic
* testing-shelve (1 changesets)
$ echo " World" >> a
$ hg stack
### topic: testing-shelve
### target: default (branch)
t1@ First commit (current)
shelve test
-----------
$ hg shelve
shelved as default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg topic
* testing-shelve (1 changesets)
$ hg stack
### topic: testing-shelve
### target: default (branch)
t1@ First commit (current)
unshelve test
-------------
$ hg unshelve
unshelving change 'default'
$ hg topic
* testing-shelve (1 changesets)
$ hg stack
### topic: testing-shelve
### target: default (branch)
t1@ First commit (current)