tests/test-issue612.t

test-ssh: stop quoting dummyssh invocation for Windows

The other invocations aren't quoted, and Windows doesn't like the single quotes:

  diff --git a/tests/test-ssh.t b/tests/test-ssh.t
  --- a/tests/test-ssh.t
  +++ b/tests/test-ssh.t
  @@ -520,20 +520,8 @@ remote hook failure is attributed to rem
     $ echo "pretxnchangegroup.fail = python:$TESTTMP/failhook:hook" >> remote/.hg/hgrc

     $ hg -q --config ui.ssh="python '$TESTDIR/dummyssh'" clone ssh://user@dummy/remote hookout
  +  abort: no suitable response from remote hg!
  +  [255]
     $ cd hookout
  +  $TESTTMP.sh: line 264: cd: hookout: No such file or directory
     $ touch hookfailure
  -  $ hg -q commit -A -m 'remote hook failure'
  ....

https://bz.mercurial-scm.org/612

  $ hg init
  $ mkdir src
  $ echo a > src/a.c
  $ hg ci -Ama
  adding src/a.c

  $ hg mv src source
  moving src/a.c to source/a.c (glob)

  $ hg ci -Ammove

  $ hg co -C 0
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo new > src/a.c
  $ echo compiled > src/a.o
  $ hg ci -mupdate
  created new head

  $ hg status
  ? src/a.o

  $ hg merge
  merging src/a.c and source/a.c to source/a.c
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ hg status
  M source/a.c
  R src/a.c
  ? src/a.o