* aclocal/enable-itron.m4: Remove changequotes (autoconf-2.49b).
* aclocal/enable-posix.m4: Remove changequotes (autoconf-2.49b), use
$host instead of $target (BUG-FIX).
* configure.in: Use $target and $host instead of $target_alias and
$host_alias (autoconf-2.49b).
* aclocal/check-newlib.m4: Remove CC_FOR_TARGET (BUG-FIX)
* aclocal/sysv-ipc.m4: Move AC_DEFINE outside of AC_CACHE (BUG-FIX)
NOTES:
* autoconf-2.49b depredicates using changequotes.
* The changes to configure.in are due to cleanups in
autoconf-2.49b's implemention of canonicalization. With
autoconf-2.1x it wasn't always clear, when to use $xxx or
$xxx_alias. Now this is clear.