= Multiple Repository Support for 0.12 =

This branch adds support for accessing multiple repositories inside one Trac project.

For now, there is support for the Mercurial (`hg`) and Subversion (`direct-svnfs`) type of repositories.

See: 
 - log:sandbox/multirepos
 - log:sandbox/mercurial-plugin-0.12

Checkpoints:
 - r6465: initial "release" of the branch, ''worksforme''
 - r6469: a few bug fixes

The approach is quite simple: beyond repository connectors, there's now repository providers (IRepositoryProvider components) which are responsible for make available a list of named repositories. That name can be arbitrary (in particular, it may contain '/' to denote a pseudo-hierarchy) and will be used as a prefix for any repository path.
Actually, a more complete description of the approach can be found in this mail: [googlegroups:trac-users:14ca95377e4a53b5 One trac env for X repositories ?].

If the only repository known is the default one (i.e. the one defined in TracIni, section `[trac] repository_...`), then Trac behaves exactly as before.
But `IRepositoryProvider` components can make other repositories available. In particular, the default `RepositoryManager` itself provides a list of repositories listed in a new `[repositories]` section in TracIni. See r6447 for more details.


= TODO =

 - More [changeset:6448 IRepositoryProvider] components:
   - !HgForestRepositoryProvider, for providing forest repositories and all sub-repositories managed by each forest
   - !HgParentDirRepositoryProvider, for listing all the working copies present in a given folder
   - !SvnParentDirRepositoryProvider, for listing all the Subversion repositories present in a given folder
 - currently, a default repository ''needs'' to be defined, otherwise the versioncontrol modules are disabled
 - ~~fix AJAX query in annotate~~
 - extend to cached repositories
 - IRepositoryProvider must have a way to signal new content, in order to rebuild the repository name cache