fix windows compile, it's possible the linux build broke and will need misc tweaks. you need a new GtkR-1.6-deps.zip

git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@227 8a3a26a2-13c4-0310-b231-cf6edde360e5

plugins/image/jpeg.cpp

@@ -34,14 +34,16 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // Leonardo Zide (leo@lokigames.com)
 //
 
+#include <stdio.h>
 #include <setjmp.h>
 #include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
 #include <glib.h>
 
+extern "C" {
 #include <jpeglib.h>
 #include <jerror.h>
+}
 
 #include "image.h"