Fix token declaration and verification in the model lexer#25137

Merged

bors merged 3 commits intorust-lang:masterfrom

carols10cents:fix-token-declaration

May 7, 2015

Commits on May 5, 2015

Correct a typo in a declared token in the reference grammar
carols10cents
committed
Declare other tokens used later in the reference grammar
carols10cents
committed
Panic if the grammar verifier sees a token it doesn't recognize
carols10cents
committed