tests/test-issue1089.t

windows: replace single quote with double quote when translating to cmd.exe

Since cmd.exe doesn't understand single quotes, single quotes to prevent $var
expansion is basically unusable without this.  Single quote isn't allowed in a
path name, so it seems unlikely to come up otherwise.

https://bz.mercurial-scm.org/1089

  $ hg init
  $ mkdir a
  $ echo a > a/b
  $ hg ci -Am m
  adding a/b

  $ hg rm a
  removing a/b
  $ hg ci -m m a

  $ mkdir a b
  $ echo a > a/b
  $ hg ci -Am m
  adding a/b

  $ hg rm a
  removing a/b
  $ cd b

Relative delete:

  $ hg ci -m m ../a

  $ cd ..