c: WIP snapshot: Remove PPNUMBER from Constant production.
c: Fix ExampleNonDirective.
c: WIP snapshot.
c: Fix ExamplePreprocessingToken_case47.
c: Fix ExamplePreprocessingToken_case49.
c: Fix ExamplePreprocessingToken_case50.
c: Fix ExampleStatement_case4.
c: Fix ExampleTextLine.
c: Fix ExampleGroup.
c: Track scope for typedef name resolution.
c: WIP snapshot.
c: WIP snapshot.
c: Fix mid rule actions.