tests/test-rebase-transaction.t

wireprotoserver: rename abstractserverproto and improve docstring

The docstring isn't completely accurate for the current state
of the world. But it does describe the direction future patches
will be taking things.

Differential Revision: https://phab.mercurial-scm.org/D2065

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > drawdag=$TESTDIR/drawdag.py
  > 
  > [phases]
  > publish=False
  > 
  > [alias]
  > tglog = log -G --template "{rev}: {desc}"
  > EOF

Rebasing using a single transaction

  $ hg init singletr && cd singletr
  $ cat >> .hg/hgrc <<EOF
  > [rebase]
  > singletransaction=True
  > EOF
  $ hg debugdrawdag <<'EOF'
  >   Z
  >   |
  >   | D
  >   | |
  >   | C
  >   | |
  >   Y B
  >   |/
  >   A
  > EOF
- We should only see two status stored messages. One from the start, one from
- the end.
  $ hg rebase --debug -b D -d Z | grep 'status stored'
  rebase status stored
  rebase status stored
  $ hg tglog
  o  5: D
  |
  o  4: C
  |
  o  3: B
  |
  o  2: Z
  |
  o  1: Y
  |
  o  0: A
  
  $ cd ..