e.g. add a property tags="baseline,release, foo";\ to a Repository in build.bnd

tags="baseline,release, foo";\

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

example:
-runrepos: \
	Workspace,\
	@resolve

this adds the Workspace repo and all other repos tagged with the tag 'resolve'

I used the '@' character as a marker for tags (for now). initially I wanted to use '#' but this is a comment in a .bndrun file.

With this i got a successful resolution as before

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

- this commit partly reverts previous commit
- repos now get the 'resolve' tag by default if not specified
- .bndrun: empty -runrepos will be populated with all repos having the 'resolve' tag
- .bndrun: resolution consider all repos having the 'resolve' tag. that means you can exclude a repo from resolution by manually assigning it a different tag (e.g. to exclude the baseline repo from resolution, you should give the baseline-repo e.g. the tag 'baseline' and make sure it does NOT have the 'resolve' tag

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

- extend RepositoryPlugin with Tagged
- make a Tags class, extending Set
- not parsing the string all the time
- replace RepoTags enum with Constants.REPOTAGS_RESOLVE

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Somehow I think it belongs there.

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

fix and improve testcase to test for consistent sorting of tags
Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

- keep backwards compatibility so that Repos without tags return an empty set and empty set means "matches"
- renamed Tags.matchesTags to Tags.isIncluded
- move tags to own package aQute.bnd.service.tags

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>

I think that better reflects the intent.
- also adjusting javadoc accordingly
- and move static methods to bottom

Signed-off-by: Christoph Rueger <chrisrueger@gmail.com>