stack: get stack data directly from stack and remove stackdata()
stackdata function began its life in 137f8b04901e as a proto-stack: it computed
stack revs on its own and only had one property to return, "changesetcount".
Later it started to prepare and return more properties, but since b933a8068c17
it was computing revs using a getstack function. And then finally in
17749d9d3968 it started to rely on stack class entirely.
It was a good function, but now, when all the logic it provided was factored
into stack class, I'd say it's finally time for it to be put to rest.
Set up some configs
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Test listing orphan changesets
$ hg init r2
$ cd r2
$ echo a > a && hg ci -Am a
adding a
$ echo b > b && hg ci -Am b
adding b
$ echo c > c && hg ci -Am c
adding c
$ hg up 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo a >> a && hg ci --amend -m a
2 new orphan changesets
$ hg evolve --list
d2ae7f538514: b
orphan: cb9a9f314b8b (obsolete parent)
177f92b77385: c
orphan: d2ae7f538514 (orphan parent)
$ cd ..
Test listing phase-divergent changesets
$ hg init r3
$ cd r3
$ echo a > a && hg ci -Am a
adding a
$ echo b > b && hg ci --amend -m ab
$ hg phase --public --rev 0 --hidden
1 new phase-divergent changesets
$ hg evolve --list
88cc282e27fc: ab
phase-divergent: cb9a9f314b8b (immutable precursor)
$ cd ..
Test listing content-divergent changesets
$ hg init r1
$ cd r1
$ echo a > a && hg ci -Am a
adding a
$ hg up 0
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b > b && hg ci -Am b
adding b
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo c > c && hg ci -Am c
adding c
created new head
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo d > d && hg ci -Am d
adding d
created new head
$ hg rebase -s 1 -d 2
rebasing 1:d2ae7f538514 "b"
$ hg rebase -s 1 -d 3 --hidden --config experimental.allowdivergence=True
rebasing 1:d2ae7f538514 "b"
2 new content-divergent changesets
$ hg evolve --list
c882616e9d84: b
content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
a922b3733e98: b
content-divergent: c882616e9d84 (draft) (precursor d2ae7f538514)
$ hg evolve --list --rev c882616e9d84
c882616e9d84: b
content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
$ hg phase -p a922b3733e98
$ hg evolve --list
c882616e9d84: b
content-divergent: a922b3733e98 (public) (precursor d2ae7f538514)
$ cd ..