gcc48: restore distinfo for file grabbed only when building gcc-java
pointed out by jperkin, thanks

fix netbsd gcc-java option build
netbsd has gethostbyname_r in libc, but not in any headers.
configure test succeeds, but compilation fails.
workaround with passing ac_cv_func_gethostbyname_r=no to autoconf
thanks joerg for the suggestion.

(maya)