Update symbols.

debian/changelog

@@ -2,7 +2,8 @@ visp (2.7.0-4) unstable; urgency=low
 
   * debian/rules: fix compilation on non-linux platforms
     by disabling optional features which are not available locally.
-  * debian/libvisp2.symbols: update symbols using the Debian buildfarm.
+  * debian/libvisp2.symbols: update symbols using pkgkde-symbolshelper and
+    the result of 2.7.0-3 compilation on buildd.
 
  -- Thomas Moulard <thomas.moulard@gmail.com>  Sun, 09 Jun 2013 20:00:48 +0900