ANSI C; sprintf now returns an int.

ANSI C; sprintf now returns an int.

SCCS-vsn: include/stdio.h 5.4
SCCS-vsn: old/cpp/cpp.c 1.17
SCCS-vsn: lib/libc/net/rcmd.c 5.14
SCCS-vsn: lib/libc/net/res_debug.c 5.21
SCCS-vsn: lib/libc/net/res_mkquery.c 6.6
SCCS-vsn: lib/libcompat/4.3/rexec.c 5.3
SCCS-vsn: lib/libcompat/4.3/ruserpass.c 5.3
SCCS-vsn: lib/libc/gen/syslog.c 5.12
SCCS-vsn: lib/libc/stdio/sprintf.c 5.3
SCCS-vsn: usr.bin/rsh/rsh.c 5.6
SCCS-vsn: usr.bin/ruptime/ruptime.c 5.4
SCCS-vsn: usr.bin/mail/def.h 5.4
SCCS-vsn: old/sysline/sysline.c 5.8