Fix lazy parsing heuristics to respect outer scope.

Fix lazy parsing heuristics to respect outer scope.

This makes sure that a function literal is only parsed lazily when the
outer scope actually allows lazy compilation. Otherwise compilation will
crash due to a missing function body.

R=ulan@chromium.org
BUG=chromium:135008
TEST=mjsunit/regress/regress-crbug-135008

Committed: https://code.google.com/p/v8/source/detail?r=11945

[ulan, 2012-06-28 14:54:18]

LGTM