Skip building locales on macos, too

--enable-hacker-mode is not sufficient, in 2.25 configure then
fails while checking for sysdeps fragments that apply to a given
configuration, and with that worked around, fails on binutils &
compiler version check.

In brief: if someone wants locales on cygwin/macos, you'd have to
implement cross-localedef (similar to cross-rpcgen) in glibc and
submit it upstream.

Signed-off-by: Alexey Neyman <stilor@att.net>

scripts/build/libc/glibc.sh

@@ -529,7 +529,7 @@ do_libc_locales() {
     # To build locales, we'd need to build glibc for the build machine.
     # Bail out if the host is not supported.
     case "${CT_BUILD}" in
-        *-cygwin)
+        *-cygwin|*-darwin*)
             CT_DoLog EXTRA "Skipping GNU libc locales: incompatible build machine"
             return
             ;;