Add 'cursor enumDeclIntegerType' command.
Add 'cursor enumConstantDeclValue' command.
Add 'cursor fieldDeclBitWidth' command.
Add 'cursor numArguments' command.
Add 'cursor argument' command.
Add 'type equal' command and rename 'cursor equals' to 'cursor equal'.
Add 'type canonicalType' command.
Add 'type is {const,volatile,restrict}Qualified' commands.