Bug 361378 - Intermittent NullPointerException in
AptCompilationParticipant

Make AptCompilationParticipant a real singleton and use an
IExecutableExtensionFactory to provide this singleton to the
ExtensionRegistry.

Change-Id: I00a2cc363ecfcbc301ca64e37df1bf7181ade331
Signed-off-by: René Brandstetter <Rene.Brandstetter@gmx.net>
Bug 451902 - Add org.eclipse.jdt.apt.core plugin to General > Tracing preference page

Change-Id: I9c713f54b7649d44fdcd1f65c176ac3872e58a4d
Signed-off-by: Szymon Ptaszkiewicz <szymon.ptaszkiewicz@pl.ibm.com>
Bug 451903 - Add org.eclipse.jdt.apt.pluggable.core plugin to General > Tracing preference page

Change-Id: I44e197f753cc05e40120adfbcb31cbcc7c8c5977
Signed-off-by: Szymon Ptaszkiewicz <szymon.ptaszkiewicz@pl.ibm.com>