Updated faq with the currently used gtk version
diff --git a/faq.php b/faq.php
index 6d29eab..d650ef6 100755
--- a/faq.php
+++ b/faq.php
@@ -26,6 +26,7 @@
   <li><a href="#gtk32">How do I build the 32-bit version of SWT GTK?</a></li>
   <p></p>
   <li><a href="#gtkstartup">Which GTK version do I need to run SWT?</a></li>
+  <li><a href="#gtkversion">Which GTK version is being used by SWT?</a></li>
   <li><a href="#cocoa64launch">Why do I get an UnsatisfiedLinkError when launching from the 64-bit Cocoa port?</a></li>
   <li><a href="#javawebstart">How can I deploy my standalone SWT application with Java Web Start?</a></li>
   <p></p>
@@ -365,6 +366,12 @@
     </p>
   </dd>
 
+  <dt><strong><a name="gtkversion">Q: Which GTK version is being used by SWT?</a></strong></dt>
+  <dd>A: SWT sets the org.eclipse.swt.internal.gtk.version system property to the version being used.
+      To display this value in Eclipse, go to Help, About Eclipse, Installation Details, Configuration.
+      In the dialog, there will be a line org.eclipse.swt.internal.gtk.version=2.24.27 where 2.24.27 is the GTK version, for example.
+  </dd>
+
   <dt><strong><a name="cocoa64launch">Q: Why do I get an UnsatisfiedLinkError when launching from the 64-bit Cocoa port?</a></strong></dt>
   <dd>A: You need to be sure that you are forcing your launch to use a 64-bit VM. Apple ships most of their VMs with 32 and
   	  64-bit binaries. To force the VM to run in 64-bit mode, use the -d64 option as VM argument in your launch configuration.