Place util exceptions in the util namespace

except.cpp

@@ -25,6 +25,7 @@
 #include <cerrno>
 
 using namespace std;
+using namespace util;
 
 
 /// Construct an errno_error from a given error value. The error value MUST signal an error at

except.hpp

@@ -26,6 +26,7 @@
 #include <stdexcept>
 
 
+namespace util {
     class input_error : public std::runtime_error {
         public:
             input_error (const std::string &_what):
@@ -71,6 +72,6 @@ class win32_error : public std::runtime_error {
             static void throw_code (void);
     };
 #endif
-
+}
 
 #endif