Log Message:
Update to 0.28.
Add missing dependencies:
  p5-Algorithm-Diff>=1.19.01
  p5-Clone>=0.15
  p5-FreezeThaw>=0.43
  p5-URI>=1.30

Update p5-PerlIO-via-symlink and p5-SVN-Mirror dependencies to 0.02
and 0.53, respectively.

Upstream changes:

[Changes for 0.28 - 9 Jan, 2004]

* Support -r in blame.

* "svk import PATH" now prompts for a depot path to import into. [Autrijus]

* Propget now reports paths properly.

* Fix a bug that tabs are treated as binary for auto-prop upon svk
  add. [Autrijus]

* Fix 'svk add' to accept explicit targets which are in the ignore list.

* Die with a more helpful message when mirroring onto an existing path.

* Fix a bug that symlinks to existing dirs is not properly given
  svn:special properties.

* Cleanup Editor::Sign and fix uncleaned tmp files.

* Fix a bug that 'svk import' does not respect svn:ignore.

* For unknown files, make revert report ignored only on explicit
  targets.

* Many code cleanups.

[Changes for 0.27 - 20 Dec, 2004]

* Allow "svk cp URI" to work akin to "svk co URI". [Autrijus]

* Fix delete (and move) path reporting.

* Fix checkout to deep directory that doesn't exist.

* Fix cp/mv src modified-ness check.

* New: checkout --export mode to detach after checkout.

* Normalize line endings in all incoming patch blocks. [Autrijus]

* Fix a case in merge involving renames.  When a file was renamed and
  its parent was also renamed separately, it should not be skipped.

* Remove the useless ticket associated with SVK::Patch, so the size of
  patch blocks is reduced.

* Fix a bug in svk add would ask users to add parent where it's
  already added.

* sync -a shouldn't die on stalled depotmap entry.

* Fix patch creation (commit -P) bug dying when there's something
  deleted.

* Fix commit buffer target parsing, particularly for the case that
  only a file is the target and the property will not be committed and
  lost.

* merge and push now supports --verbatim. [Alejandro Mery]

* "svk log" now displays "(no author)" for revisions without an
   author. [Leland David]

* Fix a case that smerge would use wrong base when the anchor was
  replaced by itself in the history.

* Fix a problem for svk with svn 1.2.x, editor::merge will generate
  "Bad file descriptor" fatal error when merging into a dav server.
  This was caused by improper pool life scope and is now fixed.