tests/test-revert-flags.t

splicemap: improve error handling when source is hg (issue2084)

1. Introduced 2 levels of error handling for splicemap files
   a. Check the splicemap file for rules which are same across different
      types of source repos.  This is done through enhancing parsesplicemap
      function
   b. Check revision string formats.  Each repo may have their own format.
      This is done usign checkrevformat function
   c. Implemented the above two for hg

  $ "$TESTDIR/hghave" execbit || exit 80

  $ hg init repo
  $ cd repo
  $ echo foo > foo
  $ chmod 644 foo
  $ hg ci -qAm '644'

  $ chmod 755 foo
  $ hg ci -qAm '755'

reverting to rev 0

  $ hg revert -a -r 0
  reverting foo
  $ hg st
  M foo
  $ hg diff --git
  diff --git a/foo b/foo
  old mode 100755
  new mode 100644

  $ cd ..