tests/test-absorb-phase.t

infinitepush: opt out of changegroup3 unless explicitly configured

This is currently a no-op, as changegroup3 is disabled by default.  But when it
is enabled, it changes the hash names of the bundle files.  As I don't use this
extension, I have no idea if that's OK or not.  So keep the current default
behavior until we can get more info from actual users, while allowing them to
opt-in for testing purposes.

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > absorb=
  > drawdag=$TESTDIR/drawdag.py
  > EOF

  $ hg init
  $ hg debugdrawdag <<'EOS'
  > C
  > |
  > B
  > |
  > A
  > EOS

  $ hg phase -r A --public -q
  $ hg phase -r C --secret --force -q

  $ hg update C -q
  $ printf B1 > B

  $ hg absorb -aq

  $ hg log -G -T '{desc} {phase}'
  @  C secret
  |
  o  B draft
  |
  o  A public