Patch Set 2: I would prefer that you didn't submit this

This does not yet work:

- clone jgit
- do some changes and commit them to have some food for synchronization
- create a file with some content at org.eclipse.jgit/target/a.txt
- create a file with some content at org.eclipse.jgit/b.txt
- create a file with some content at org.eclipse.jgit/testignore/c.txt
- add /testignore to org.eclipse.jgit/.gitignore to instruct git to ignore all files under /testignore
- on project org.eclipse.jgit click Team > Synchronize and select
local .git repo master branch as source (check the local change checkbox) and origin/master as the target
- result:
   - org.eclipse.jgit/target/a.txt isn't shown : good, don't know yet
if this is due to derived-ness of target folder or due to git-ignored folder
   - org.eclipse.jgit/b.txt is shown as it's neither Eclipse-derived nor git-ignored : good
   - org.eclipse.jgit/testignore/c.txt is shown : bad, this should be ignored
- double check by clicking Team > Commit : this doesn't show org.eclipse.jgit/testignore/c.txt -> gitignore is working here