conflicting types for `mktime' is userspave programs using libc5

@@ -46,6 +46,7 @@
 	value->tv_sec = jiffies / HZ;
 }
 
+#ifdef	__KERNEL__
 /* Converts Gregorian date to seconds since 1970-01-01 00:00:00.
  * Assumes input in normal date format, i.e. 1980-12-31 23:59:59
  * => year=1980, mon=12, day=31, hour=23, min=59, sec=59.

@@ -78,6 +79,7 @@
 	  )*60 + min /* now have minutes */
 	)*60 + sec; /* finally seconds */
 }
+#endif
 
 
 struct timeval {