tests/test-rebuildstate.t

merge: remove last traces of fastforward merging

bbc97d419b16 introduced fast-forward branch merging.
66ed92ed115a partly removed it again.

The fastforward variable would always be false if branchmerge was false, so the
fastforward variable makes no difference and we can remove it completely.

basic test for hg debugrebuildstate

  $ hg init repo
  $ cd repo

  $ touch foo bar
  $ hg ci -Am 'add foo bar'
  adding bar
  adding foo

  $ touch baz
  $ hg add baz
  $ hg rm bar

  $ hg debugrebuildstate

state dump after

  $ hg debugstate --nodates | sort
  n 666         -1 bar
  n 666         -1 foo

status

  $ hg st -A
  ! bar
  ? baz
  C foo