Another part of #932
In this PR I changed all the library instrumentation packages -- these
are breaking changes, so I figured the earlier we do this the less
painful it'll be to the users. I know that at least some of them are
actively used, so we'll need to spell this out in the release notes.
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Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
* C3P0 connection pool metrics
* Use PooledDataSource instead of specific implementation
* Add C3P0 readme
* RuntimeException in case of underlying SQLException
* Use ISE instead of RuntimeException
Mateusz Rzeszutek
Aaron Ai
Trask Stalnaker
Ago Allikmaa