tigefa4u projects Trac

WorkFlow: Initialise svnmerge.

Blocked r4045,r4063,r4066,r4067,r4074:4078,r4082:4083,r4085:4087 from being merged in 0.10-stable.
- datetime and Genshi fixes
- patch renderer enhancements
- support for changeset ranges in TracLinks
- request dispatcher enhancements

Ported [4088] to 0.10-stable (''enforce WIKI_VIEW permission, #4042'')

Check WIKI_VIEW permission regardless of the format. Fixes #4042.

Use a more transparent method to avoid building the authenticaton, session and chrome data for requests that don't need them: the `Request` object now supports specifying callback functions that are called when undefined request attributes are accessed. The request dispatcher provides callbacks for `req.authname`, `req.session`, `req.hdf`, etc, so that those are evaluated lazily.

Decouple `env.href` and `env.abs_href` from the current request, and instead base them on the `base_url` option in [wiki:TracIni trac.ini].

Fixes a few glitches in the Genshi Roadmap and Milestone templates. Thanks to Justin Francis for the patch!

SpamFilter: minot tweaks

Add support for displaying list of changesets and ranges of changesets in TracRevisionLog by extending the TracLinks `log:` syntax.

Now, in addition to a single range `[12:23]` which was already supported, one can list multiple ranges like `[12:34,45:50]` (or equivalently `[12-34,45-50]`). Single changeset numbers can also be listed instead of ranges, e.g. `[1,2,3-6,10,11]`.

Further simplification of the TracBrowser's IWikiSyntaxProvider