* configure.ac: Check for inet_ntop.
* m4/libcurl.m4: Provide a #define for the version of the curl
library.
* keyserver/gpgkeys_hkp.c (main, srv_replace): Call getaddrinfo() on
each target. Once we find one that resolves to an address (whether
IPv4 or IPv6), pass it into libcurl via CURLOPT_RESOLVE using the
SRV name as the "host". Force the HTTP Host header to be the same.
Backported from 6b1f71055e
* keyserver/gpgkeys_hkp.c (main): Only default try-dns-srv to on if we
have SRV support in the first place.
Backported from 732f3d1d47
Autoconf 2.68 is more picky about correct macro usage and thus I fixed
some wrong call conventions for AC_LANG_PROGRAM. Also factored an m4
conditional construct out from AC_INIT to avoid the "not a literal"
warning.
search towards the given path for includes and libraries. Noted
by Jason Harris.
* Makefile.am: Distribute tar-ustar.m4.
* libcurl.m4: If a PATH is given to --with-libcurl, look for
curl-config in that path. Bias directory search towards the given
path for includes and libraries.
rl_catch_signals.
* libcurl.m4: Don't require curl-config to be present since it seems some
binary packages don't include it. Allow users to specify LIBCURL and
LIBCURL_INCLUDES for us.
