callfcgi: Improved recvrec implementation.
htparser: Added support for handing a cipher priority specification to GnuTLS.
htparser: Accept more connections in bulk.

If not for this, htparser will concentrate unduly on processing
existing connection, leaving the socket backlog filling up in the
meantime, dropping requests unnecessarily.
htparser: Fixed typo.
Merge branch 'master' of git.dolda2000.com:/srv/git/r/ashd
psendfile: Fixed crash when files cannot be opened.