demangle moves to logging

lib/Log.cc

@@ -31,8 +31,23 @@ directory
 /*  END LEGAL */
 #include <Grid.h>
 
+#include <cxxabi.h>
+
 namespace Grid {
 
+  std::string demangle(const char* name) {
+    
+    int status = -4; // some arbitrary value to eliminate the compiler warning
+    
+    // enable c++11 by passing the flag -std=c++11 to g++
+    std::unique_ptr<char, void(*)(void*)> res {
+      abi::__cxa_demangle(name, NULL, NULL, &status),
+	std::free
+	};
+    
+    return (status==0) ? res.get() : name ;
+  }
+  
 GridStopWatch Logger::StopWatch;
 std::ostream Logger::devnull(0);