Fix bug #9560, sporadic wrong indentation; improve instrumentation of

Fix bug #9560, sporadic wrong indentation; improve instrumentation of
c-parse-state.
cc-engine.el (c-append-lower-brace-pair-to-state-cache): correct faulty
logical expression.

(c-parse-state-state, c-record-parse-state-state):
(c-replay-parse-state-state): New defvar/defuns.
(c-debug-parse-state): Use new functions.