This patch switches compilation to Java 11 to consume "com.sun.jdi"
packages from JDK, but requires patch for jdt.debug which would remove
duplicated jdi packages contributed by jdt.debug.

This is required to avoid "The package com.sun.jdi is accessible from
more than one module" error, because jdt.debug ships own version of
"com.sun.jdi" packages, and this breaks compilation on Java 11.

Change-Id: I782fcc5eafcb1456b9a0ce72def583320a4a33db
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>