Bug 427075 - [1.8] Unable to set breakpoint in interface methods

Change-Id: Ic291be9d89f0a5555b8663fdeedbfac8db985a25
Signed-off-by: Sarika Sinha <sarika.sinha@in.ibm.com>
Changed project settings needed to allow compiling with JDK7 without
built files getting into git.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Added README.md and CONTRIBUTING.md files.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>