Add basic error recovery in identifier()
Add basic error recovery in identifier()

The idea is very simple: Don't raise error recovery when you
only have semantic errors, when it is not needed a character
synchronization

k0gaMSX/scc,8l/scc,8l/scc,k0gaMSX/scc,k0gaMSX/kcc,k0gaMSX/scc,8l/scc,k0gaMSX/kcc