[releng] Apply auto-clean of save to all files with Eclipse 4.23

This mostly is using diamond operator, but includes
adding missing @OverRide and organizing imports and
applying formatting improvements in the JDT formatter.

Change-Id: Id91cbff33b0a039cc5121945ffbc407ecba45866

Author: jonahgraham

terminal/plugins/org.eclipse.tm.terminal.control/src/org/eclipse/tm/internal/terminal/emulator/EditActionAccelerators.java

@@ -24,7 +24,7 @@ class EditActionAccelerators {
 	private static final String COPY_COMMAND_ID = "org.eclipse.tm.terminal.copy"; //$NON-NLS-1$
 	private static final String PASTE_COMMAND_ID = "org.eclipse.tm.terminal.paste"; //$NON-NLS-1$
 
-	private final Map<Integer, String> commandIdsByAccelerator = new HashMap<Integer, String>();
+	private final Map<Integer, String> commandIdsByAccelerator = new HashMap<>();
 
 	private void load() {
 		addAccelerator(COPY_COMMAND_ID);