change log level to quiet things down a bit.

--HG--
extra : rebase_source : bc407cc204089d990f6749f0e92ddd8630df7ecf
fix additivity so that it combines two configurations properly.

--HG--
extra : rebase_source : f6e3b586edd48e8c760adcd95362a5091bbb76c2
pike 7.9-ism

--HG--
extra : rebase_source : adbfea61b22260ceee1de80b73c90daa21bb35c0
log erors a bit better: missing layouts aren't worthy of errors, but compilation problems
with layouts are.

--HG--
extra : rebase_source : d81317ddda5ef15378684b0ecdba05504de3597c
fix access logging when request->query is empty.
more refinement of template loading errors.