* addrinfo.h: Removed and gave up to emulate getaddrinfo(3). Thus

* addrinfo.h: Removed and gave up to emulate getaddrinfo(3). Thus
on systems where there is no such thing, we are now being unable
to use IPv6.
* bittypes.h: Ditto.
* getaddrinfo.c: Ditto.
* sockstorage.h: Ditto.
* Makefile.am: Took off the above stuff from EXTRA_DIST.
* configure.in: Don't touch $LIBOBJS even if there is no
getaddrinfo working.

* starttls.c (tls_connect) [!HAVE_ADDRINFO]: Don't use the fake
getaddrinfo.