Remove configure check for bcopy(), no longer required

This fixes building on Haiku OS (where bcopy() is a macro, not a function).

configure

@@ -4519,42 +4519,6 @@ _ACEOF
  fi
 
 
-  echo "$as_me:$LINENO: checking for bcopy in string.h" >&5
-echo $ECHO_N "checking for bcopy in string.h... $ECHO_C" >&6
-if test "${ac_cv_bcopy_declared+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "bcopy" >/dev/null 2>&1; then
-  ac_cv_bcopy_declared="yes"
-else
-  ac_cv_bcopy_declared="no"
-fi
-rm -f conftest*
-
-
-fi
-echo "$as_me:$LINENO: result: $ac_cv_bcopy_declared" >&5
-echo "${ECHO_T}$ac_cv_bcopy_declared" >&6
- if test x"$ac_cv_bcopy_declared" = x"yes"; then
-
-cat >>confdefs.h <<\_ACEOF
-#define BCOPY_DECLARED 1
-_ACEOF
-
- fi
-
-
 echo "$as_me:$LINENO: checking whether strsignal is declared" >&5
 echo $ECHO_N "checking whether strsignal is declared... $ECHO_C" >&6
 if test "${ac_cv_have_decl_strsignal+set}" = set; then

configure.in

@@ -83,7 +83,6 @@ AC_CHECK_DECLARATION(getpass, getpass, getpass, unistd.h, GETPASS_DECLARED)
 AC_CHECK_DECLARATION(errno, errno, [int?( |	)_?_?errno], errno.h, ERRNO_DECLARED)
 AC_CHECK_DECLARATION(struct linger, struct_linger, [struct( |	)*linger], sys/socket.h, STRUCT_LINGER_DECLARED)
 AC_CHECK_DECLARATION(sun_len, sun_len, sun_len, sys/un.h, HAVE_SUN_LEN)
-AC_CHECK_DECLARATION(bcopy, bcopy, bcopy, string.h, BCOPY_DECLARED)
 
 AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist], , ,
 [AC_INCLUDES_DEFAULT

include/defs.h.in

@@ -1,8 +1,5 @@
 /* include/defs.h.in.  Generated from configure.in by autoheader.  */
 
-/* Define this if bcopy is declared in string.h. */
-#undef BCOPY_DECLARED
-
 /* Define to one of `_getb67', `GETB67', `getb67' for Cray-2 and Cray-YMP
    systems. This function is required for `alloca.c' support on those systems.
    */

include/irc_std.h

@@ -204,10 +204,6 @@ int	killpg (int pgrp, int sig);
 char *	getpass (const char * prompt);
 #endif
 
-#ifndef BCOPY_DECLARED
-void	bcopy (const void *src, void *dest, size_t n);
-#endif
-
 #define BUILT_IN_COMMAND(x) \
 	void x (char *command, char *args, char *subargs, char *helparg)