Merge pull request #26 from avsm/master

ppc64 detection
Add ppc64 and armv5tel host tasks
Merge pull request #27 from avsm/master

+powerpc and openbsd
add OpenBSD/powerpc tasks and correct OpenBSD string
add OpenBSD/i386 tasks
add FreeBSD/i386 and OpenBSD/amd64 tasks
Add FreeBSD/amd64 tasks
Add Darwin/amd64 tasks
send content-type for anosmic browsers
Always pick the last matching error pattern; mark unknown errors in dependencies correctly
fix unknown dependency error type-o
push the state
explain the initialization and make sure the local state repo is up-to-date
if pushing fails after a task result commit, ignore the failure
log our ignorance