Eclipse compiler update for Java 8 support

See https://bugs.eclipse.org/bugs/show_bug.cgi?id=396000 and
https://github.com/processing/processing/issues/2260

Verified against Eclipse project with md5sum
8075a8fbdac1452e0ddb6bda8a5d953b.

Signed-off-by: Andreas Tolfsen <ato@mozilla.com>