Merge 'trunk' into 'fix_request_uri'

Merge 'trunk' into 'fix_request_uri'

r13213@tomas-dorans-macbook-pro (orig r13177):  ajgb | 2010-04-21 11:10:51 +0000
Fix not stripping backslashes in DispatchType::Regex::uri_for_action
r15483@tomas-dorans-macbook-pro (orig r13190):  rafl | 2010-04-28 22:54:04 +0000
Make sure path_to returns an instance of the right Path::Class class.
r15484@tomas-dorans-macbook-pro (orig r13191):  edenc | 2010-04-28 23:29:02 +0000
minor documentation fix for handle_request
r15489@tomas-dorans-macbook-pro (orig r13193):  rafl | 2010-05-02 23:16:25 +0000
Allow parameterized roles to be applied as plugins.
r15490@tomas-dorans-macbook-pro (orig r13194):  t0m | 2010-05-02 23:27:43 +0000
Back out crazy heuristics