Fix build with Java 11.

Javax.annotation has to be added as it's not part of Java 11.
Removed the classpath line from options as most of the entries there are
plain wrong and unresolvable for years - no longer inner jaras and etc.

Change-Id: I2db47f541372b3b0544996d0796071976d87cd8b
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>

doc/org.eclipse.cdt.doc.isv/cdtOptions.txt

@@ -1,7 +1,6 @@
 -charset "iso-8859-1"
 -sourcepath "../../core/org.eclipse.cdt.core.native/src;../../core/org.eclipse.cdt.core/model;../../core/org.eclipse.cdt.core/parser"
 -d reference/api
--classpath  ${bootclasspath};../org.apache.ant/lib/ant.jar;../org.eclipse.debug.core/dtcore.jar;../org.eclipse.compare/compare.jar;../org.eclipse.help/help.jar;../org.eclipse.help.ui/helpworkbench.jar;../org.eclipse.core.resources/resources.jar;../org.eclipse.core.runtime/runtime.jar;../org.eclipse.core.filebuffers/filebuffers.jar;../org.eclipse.core.expressions/expressions.jar;../org.eclipse.swt.win32/ws/win32/swt.jar;../org.eclipse.swt.motif/ws/motif/swt.jar;../org.eclipse.ui/ui.jar;../org.eclipse.jdt.debug/jdi.jar;../org.eclipse.debug.ui/dtui.jar;../org.eclipse.search/search.jar;../org.eclipse.jface/jface.jar;../org.eclipse.jface.text/jfacetext.jar;../org.eclipse.text/text.jar;../org.eclipse.ui.editors/editors.jar;../org.eclipse.ui.views/views.jar;../org.eclipse.ui.workbench/workbench.jar;../org.eclipse.ui.workbench.texteditor/texteditor.jar;../org.eclipse.core.variables/variables.jar;../org.eclipse.ui.ide/ide.jar;../org.eclipse.jdt.junit/junitsupport.jar;../org.eclipse.osgi/osgi.jar;../org.eclipse.osgi/core.jar;../org.eclipse.osgi/eclipseAdaptor.jar;../org.eclipse.osgi.services/services.jar;../org.eclipse.osgi.util/util.jar
 -breakiterator
 -use
 -splitIndex

doc/org.eclipse.cdt.doc.isv/pom.xml

@@ -63,6 +63,10 @@
 									<artifactId>org.eclipse.pde.core</artifactId>
 									<type>eclipse-plugin</type>
 								</dependency>
+								<dependency>
+									<artifactId>javax.annotation</artifactId>
+									<type>eclipse-plugin</type>
+								</dependency>
 							</dependencies>
 						</configuration>
 						<executions>