start soft-deprecate of am_policy_hub: policy server is the established name
Call tchdboptimize only in 1% of the OpenTokyoDatabase() calls

Even though we call non-reentrant rand() from multiple thread contexts,
there is no harm done even if bad random numbers are returned.
Fix grammar in mount message.

Fixes #2938
Report state of agent only in verbose mode.

Fixes #2821
Merge pull request #755 from jimis/blah2

Call tchdboptimize only in 1% of the OpenTokyoDatabase() calls
Enable colorized output --color=never,auto,always (-C)

Defaults to 'never'