[equinox-dev] [prov] Some provisioning changes released

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

I released a couple of small to the
provisioning incubator:

 - New local metadata repository.
If you create a metadata repository pointing to a local file system directory,
it will traverse the directory in search of "content.xml" files,
and aggregate them together. This makes it easier to cobble together metadata
from various places without creating multiple metadata repositories

 - To allow for experimenting with
groups that define filters, I added some bits to the feature parser so
that features can define extra filters on their imports and includes. If
you run a feature with filters through the metadata generatory, they get
turned into filters on the RequiredCapability. This was simpler than hand-crafting
filter-enabled groups manually.