[jdt-core-dev] Fix list for RC3

["Philippe P Mulet" <philippe_mulet@xxxxxxxxxx>]

So far, we plan to release fixes for the following 5 defects (into next
integration build):

MEMORY LEAK
33927 Leak in Java Editor

PERFORMANCE
33950 Slow performance when changing code in a much referenced project
34078 Hierarchy: 27% of time spent reporting progress

TRIVIAL
34000 JDK Compliance doesn't match javac generation from an IBM or SUN JDK
33998 unexpected NullPointerException