clang-tidy: Basic configuration

This also cleans up some outstanding issues detected by the
configuration.

Tested:
Ran through unit test scripts.

Change-Id: I33

clang-tidy: Basic configuration

This also cleans up some outstanding issues detected by the
configuration.

Tested:
Ran through unit test scripts.

Change-Id: I3357a2280a681a87532d6d72315260db2ab73e87
Signed-off-by: William A. Kennington III <wak@google.com>

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