Bug 419647 - React to ECF feature restructuring

Adding general "source" requirement in Eclipse SDK, until 
can be better fixed "lower" in stack later.
Changed test.performance project settings needed to allow compiling with
JDK7.

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>
Changed BREE to 1.8 for test.performance.

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