Experimental parser: remove hacks from replace_tokens_with_gotos.

Experimental parser: remove hacks from replace_tokens_with_gotos.

The hack was for making sure that the state to which we "goto" is connected to
the state graph: it avoided doing the replacement for states which have an entry
action, and our grammar happened to have such an action, so it worked.

After this change, we insert a bogus edge to make the "goto" state connected to
the state graph, and remove the "don't replace states which have an entry
action" condition.

TBR=dcarney@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=18744

[marja, 2014-01-22 12:32:53]

Committed patchset #3 manually as r18744 (presubmit successful).