Robert P. Day removed 8 gazillion occurrences of "extern" on function

definitions.  (That should only be on prototypes.)

coreutils/df.c

@@ -46,7 +46,7 @@ static long kscale(long b, long bs)
 }
 #endif
 
-extern int df_main(int argc, char **argv)
+int df_main(int argc, char **argv)
 {
 	long blocks_used;
 	long blocks_percent_used;