modify and cleanup python headers and libs

ref/python/include/timefuncs.h

@@ -16,6 +16,9 @@ extern "C" {
  */
 PyAPI_FUNC(time_t) _PyTime_DoubleToTimet(double x);
 
+/* Get the current time since the epoch in seconds */
+PyAPI_FUNC(double) _PyTime_FloatTime(void);
+
 
 #ifdef __cplusplus
 }