[PATCH] buildbot master configuration on asf infra

Hi Gavin,

this patch changes the current configuration in two ways:
1. define a list of paths that, when only those are changed, don't
trigger a build.
2. trigger builds not only for trunk, but also for our release
branches (1.6.x etc)

Lieven

[[[
Bring the asf buildbot master up to date with the old master's configuration for
the Subversion project.

* infrastructure/buildbot/aegis/buildmaster/master1/projects/subversion.conf
  (exludes, isImportant): new definitions to define paths not interesting enough
   to trigger a build.
  (c['schedulers']): add the release branches to the list of branches the master
   keeps an eye on.
]]]