FastPrintWriter needs to have its own lock for each instance, or
else one getting blocked can cause others to block and whacky deadlocks
result.
Also:
- Improve error reporting of SystemConfig to tell you which config
file is the problem.
- Fix CoreSettingsProvider to not spew errors if a setting is not
defined (it should just use a default value).
- Get rid of noisy init output of ConditionProviders.
- Reduce log noise of starting a process; move some of that information
to ProcessRecord to print on demand.
Change-Id: I1032d141ddd449968b74ab7b88ab36f2d228ad1a
b3d4cb369e