Support libpsl for cookie domain checking
Update README.checkout.
Updated README.checkout (lynx -dump from wiki).
Update README.checkout to be more generic.
configure.in adapted to automake; announce in NEWS. README.checkout adjustment.
[svn] Refer to "INSTALL".
[svn] Don't document the gettext dependency here.
[svn] Document that we require Autoconf 2.59.
[svn] Document autogen.sh in README.checkout.