net.miginfocom.layout: Added new plugin
fixing classpath of projects to use the default JREContainer

Change-Id: I07d887535c422baddaaab9934eacb7bd87c4ecd0
Signed-off-by: Kunal Shroff <shroffk@bnl.gov>
Majority of the Tycho build configuration complete. Remaining problem with GEF dependency.
Add extra third party plugins from main repository. Update build configuration.
Add 'plugins/net.miginfocom.layout/' from commit '41122730d7588274f106cf833faf5ba1d18a1581'

git-subtree-dir: plugins/net.miginfocom.layout
git-subtree-mainline: 5e460e818e3585344726cba7cc5a1adeb2650179
git-subtree-split: 41122730d7588274f106cf833faf5ba1d18a1581
Add third party plugin: net.miginfocom.layout