Describe that bcopy(3) is deprecated and marked as LEGACY in

POSIX.1-2001 and removed from the specification in POSIX.1-2008.
New softwares shall use memcpy(3) or memmove(3).

Differential Revision:	D3358
Reviewed by:		wblock
Approved by:		rodrigc
Sponsored by:		gandi.net

lib/libc/string/bcopy.3

@@ -31,7 +31,7 @@
 .\"     @(#)bcopy.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd August 11, 2015
 .Dt BCOPY 3
 .Os
 .Sh NAME
@@ -57,6 +57,20 @@ The two strings may overlap.
 If
 .Fa len
 is zero, no bytes are copied.
+.Pp
+This function is deprecated (marked as LEGACY in
+POSIX.1-2001): use
+.Xr memcpy 3
+or
+.Xr memmove 3
+in new programs.
+Note that the first two arguments are
+interchanged for
+.Xr memcpy 3
+and
+.Xr memmove 3 .
+POSIX.1-2008 removes the specification of
+.Fn bcopy .
 .Sh SEE ALSO
 .Xr memccpy 3 ,
 .Xr memcpy 3 ,