tigefa4u projects Trac

VcRefactoring: backout the setuptools namespace stuff. Instead, use the convention to name the version control backend plugin using the `tracvc.` prefix.

VcRefactoring: renamed `Changeset.properties` to `Changeset.get_properties` + fix when using with svn

VcRefactoring: merge changes from [log:trunk@...:2983]

* More trunk merges, log:trunk:2964:2982
* Added missing checkbox field.

Really fixed standalone.py this time.

Fixed broken usage() help in standalone.py.

unicode: synched branch with trunk@... and fixed #2394.

Ported [2978] to 0.9-stable ''(lessen path_history memory usage)''

Further reduce memory usage during path_history queries (follow-up to r2151).

Thanks to exarkun for the report and bdash for hinting me to the fix.

`trac.util` is now a package. Split out `Markup` class into separate `trac.util.html` module.