Grammar checking errors should be reported during binding phases instead of type-checking phase

_From @StrongRef on December 15, 2015 9:32_ When declaring an octal literal, an error is shown.  However, if another error is introduced, the error for octal literal usage is omitted.  Another strict rule violation, this time both errors are visible.  I could like into this one, just want to make sure this is an actual error. _Copied from original issue: Microsoft/vscode#1318_