downgrade more error() to debug() to better match what old authfile.c
did; suppresses spurious errors with hostbased authentication enabled
update to lynx 2.8.8rel2, keeping local changes. primarily to get these
changes from 2.8.8dev.16:

* fix most issues found by clang 3.2 analyze
* fix most issues found by Coverity scan

tested on i386, sparc64, and macppc by myself.
tested on vax by miod@ (including https)
helpful discussion with avsm@, sthen@

ok deraadt@