Fixed compiler warnings on linux.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@9529 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/utils/time.hpp

@@ -31,8 +31,9 @@
 
 #include <string>
 
-namespace Time
+class Time
 {
+public:
     typedef time_t TimeType;
 
     /** Converts the time in this object to a human readable string. */