* cat.c (cat): Use memmove rather than bcopy.
* csplit.c (load_buffer): Use memcpy rather than bcopy.
+ (extract_regexp): Use strrchr, not rindex.
* fmt.c (isopen, isclose, isperiod): Use strchr, not index.
(flush_paragraph): Use memmove instead of bcopy.
* fold.c (fold_file): Use memmove instead of bcopy.
* od.c (decode_format_string): Use memmove instead of bcopy.
[EQUAL_BLOCKS]: Use memcmp, not bcmp.
+ (parse_old_offset): Use strchr, not index.
(dump): Use memset, not bzero.
* sort.c (checkfp, mergefps): Use memcpy instead of bcopy.
(fillbuf): Use memmove instead of bcopy.