jdt.ui. Merge branch 'BETA_JAVA15'

Conflicts:
	org.eclipse.jdt.core.manipulation/META-INF/MANIFEST.MF
	org.eclipse.jdt.core.manipulation/pom.xml
	org.eclipse.jdt.ui.tests/META-INF/MANIFEST.MF
	org.eclipse.jdt.ui.tests/pom.xml
	org.eclipse.jdt.ui/META-INF/MANIFEST.MF
	org.eclipse.jdt.ui/pom.xml

Change-Id: Ica64e5d8740c0dfd173808dc38ce17ca79d7cbcb
Signed-off-by: Kalyan Prasad Tatavarthi <kalyan_prasad@in.ibm.com>