restructured configuration (ofac.c)

- ofac.c contains now only the command in initialisation function list
- the other functions are moved to sicsutil.c
- moved DoubleTime and the content of access.c to sicsutil.c
- moved some initialisation code from ofac.c to the corresponding modules

nserver.h

@@ -52,7 +52,4 @@ int UserWait(SConnection * pCon, SicsInterp * pSics, void *pData,
 int SicsWait(long lTime);
 int ServerIsStarting(pServer self);
 
-double DoubleTime(void);
-/* returns time since epoch in seconds
-   the resultion is machine dependent, but mostly better than msec */
 #endif