Log Message:
Update devel/p5-SVN-Mirror to 0.72.
Changes since 0.67:

[Changes for 0.72 - Nov 2, 2006]
* Use a custom transaction to commit the mirror rev, and have the
  revision property set via txn for atomicy.
* Requires Subversion 1.2.0.
[Changes for 0.71 - Oct 3, 2006]
* Fix url escape issues for replaced copied source.
* Fix a bug in replace with history, where the copy source is related
  to the current node, but outside the mirror.
[Changes for 0.70 - Aug 25, 2006]
* More fixes for the new replace code.
[Changes for 0.69_3 - Aug 14, 2006]
* Fix bugs mirroring revisions containing replace with history, that
  is from different path.
[Changes for 0.69_2 - Aug 14, 2006]
* Fix bugs mirroring revisions containing replace with history.
* When there is no change, only touch in root.
[Changes for 0.69_1 - Jul 22, 2006]
* Major overhaul of the mirror editor. [plasma]
* When remote repository disallows property reading on '/', fallback
  to normal mirror.
* Workaround different behaviour of ra backends in ra->get_logs start
  argument, which causes skipto to fail for some repositories.
[Changes for 0.68 - Dec 12, 2005]
* Escape the copyfrom_path, as that's what is expected by svn api.
* Fix a memory leak when mirroring changes with lots of copies.
* Fix a problem that there is a replaced item with history that is out
  of the mirror anchor.