cesanta/v7 — pull request #42 by mmikulicic (2014-12-13 00:42:41+00:00)
Title: Remove undefined token

Ecma tests test for `var undefined = 1`.
The actual execution of this assignment is ignored,
but we should not treat this as reserved word token because it's not.

Not bothering fixing `parser.c` since reimplementation with AST is on its way.