xauth: upgrade 1.1.2 -> 1.1.3

xauth: upgrade 1.1.2 -> 1.1.3

Changelog:
==========
-unifdef Lynx
-unifdef hpux
-configure: raise minimum autoconf requirement to 2.70
-configure: Use AC_SYS_LARGEFILE to enable large file support
-Unbold brackets for optional n at start of commands
-Handle -Wempty-body warning for WRITES() macro
-Remove unnecessary casts from malloc() calls
-Variable scope reductions, as suggested by cppcheck
-config: Add missing AC_CONFIG_SRCDIR

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>