Second try: we should add *flags for mozilla plugin not only in the case of xulrunner.

configure.ac

@@ -5149,6 +5149,7 @@ then
         have_xul=true
 	MOZILLA_CONFIG="${XULRUNNER_CONFIG}"
       fi
+    fi
     
     if ${MOZILLA_CONFIG} --defines | grep -q 'MOZ_X11=1'; then
       LDFLAGS="${LDFLAGS_save} ${X_LIBS} ${X_PRE_LIBS}"
@@ -5156,13 +5157,13 @@ then
        [
          VLC_ADD_CPPFLAGS([mozilla],[${X_CFLAGS}])
          VLC_ADD_LDFLAGS([mozilla],[${X_LIBS} ${X_PRE_LIBS} -lXt -lX11 -lSM -lICE])
-	 ],
+],
        [],
        [[${X_LIBS} ${X_PRE_LIBS} -lX11 -lSM -lICE]
       ])
       LDFLAGS="${LDFLAGS_save}"
     fi
-    fi
+    
       mozilla=:
       dnl Workaround for http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=150490
       VLC_ADD_CPPFLAGS([mozilla],[[`${MOZILLA_CONFIG} --cflags plugin xpcom java | sed 's,-I\([^ ]*\)/mozilla/\([^ ]*\),-I\1/\2 -I\1/mozilla/\2,g' | xargs`]])