tests/test-convert-bzr-treeroot.t

tests: cleanup of svn url handling

The subversion tests used different tricks to create properly encoded URLs,
partly due to partial support for different ways of running the tests on
windows. Now we only need/support one way of running the tests on windows.

Windows URLs should look like 'file:///c:/foo%20bar' and on Unix platforms
like 'file:///tmp/baz'.

'pwd' in the test framework will on Windows emit paths like 'c:/foo bar'.
Explicit handling of backslashes in paths is thus no longer needed and is
removed.  Paths on windows do however need an extra '/' compared to other
platforms.

This change makes test-subrepo-svn.t pass on windows with msys. Other tests
might need more work.

  $ . "$TESTDIR/bzr-definitions"
  $ cat > treeset.py <<EOF
  > import sys
  > from bzrlib import workingtree
  > wt = workingtree.WorkingTree.open('.')
  > 
  > message, rootid = sys.argv[1:]
  > wt.set_root_id('tree_root-%s' % rootid)
  > wt.commit(message)
  > EOF

change the id of the tree root

  $ mkdir test-change-treeroot-id
  $ cd test-change-treeroot-id
  $ bzr init -q source
  $ cd source
  $ echo content > file
  $ bzr add -q file
  $ bzr commit -q -m 'Initial add'
  $ python ../../treeset.py 'Changed root' new
  $ cd ..
  $ hg convert source source-hg
  initializing destination source-hg repository
  scanning source...
  sorting...
  converting...
  1 Initial add
  0 Changed root
  $ manifest source-hg tip
  % manifest of tip
  644   file

  $ cd ..