Document the new --launcher.noRestart launcher argument

Argument added via eclipse-equinox/equinox#595

eclipse.platform.common/bundles/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html

@@ -115,6 +115,10 @@ <h2><a name="commandline"></a>Command line arguments </h2>
   <dd>If specified the executable will not display any error or message
 dialogs.&nbsp; This is useful if the executable is being used in an
 unattended situation.</dd>
+  <dt>--launcher.noRestart (Executable)</dt>
+  <dd>If specified, the special handling of exit codes 23 (restart) and 24
+(relaunch) is disabled and they are treated as regular exit codes. This can be
+useful for non-IDE/command-line applications.</dd>
   <dt>--launcher.secondThread (Executable)&nbsp; <span
  style="font-style: italic;">MACOSX ONLY</span></dt>
   <dd>If specified the executable will create the Java VM on a