Merge remote-tracking branch 'origin/development' into serial

Conflicts:
	commandline.c
	conf_schema.h
	overlay_interface.c
	rhizome_direct_http.c
	tests/routing
don't look at all BARs if we are too slow.
create indexes for ID and VERSION on MANIFESTS table to reduce the
time it takes to lookup whether BARs are interesting.
tweak BAR lookup filter in light of packets arriving with 20 BARs
at a time, which can take 4seconds(!) to process on a WR703N.
log when BAR lookups are slow.