tests/test-changelog-exec.t

tests: stabilize test-patch.t on Windows

$PYTHON needs to be quoted when invoking with cmd.exe, because the value expands
to c:/Python27/python.exe, which seems to be interpreted as 'c' being a command.
We can't just convert to '\', because there are a few places that run $PYTHON
directly in MSYS.  If unquoted there, it results in c:Python27python.exe being
run.  I wonder if we should bake the quotes into the environment variable to
avoid this.

It also wasn't happy with the quoting around exit1.py:

  c:/Python27/python.exe: can't open file ''$TESTTMP/d/exit1.py'': [Errno 22] Invalid argument

#require execbit

b51a8138292a introduced a regression where we would mention in the
changelog executable files added by the second parent of a merge. Test
that that doesn't happen anymore

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

  $ echo bar > bar
  $ chmod +x bar
  $ hg ci -qAm 'add bar'

manifest of p2:

  $ hg manifest
  bar
  foo

  $ hg up -qC 0
  $ echo >> foo
  $ hg ci -m 'change foo'
  created new head

manifest of p1:

  $ hg manifest
  foo

  $ hg merge
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ chmod +x foo
  $ hg ci -m 'merge'

this should not mention bar but should mention foo:

  $ hg tip -v
  changeset:   3:c53d17ff3380
  tag:         tip
  parent:      2:ed1b79f46b9a
  parent:      1:d394a8db219b
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files:       foo
  description:
  merge
  
  

  $ hg debugindex bar
     rev linkrev nodeid       p1           p2
       0       1 b004912a8510 000000000000 000000000000

  $ cd ..