Make global NaN, Infinity and undefined read only.

Make global NaN, Infinity and undefined read only.
Change test expectation files where tests now pass, or newly fail.

BUG=
TEST=sputnik, es5conform, mozilla

[Martin Maly, 2011-02-25 02:26:03]

This came up as part of strict mode work. Firefox and Safari already have NaN,
Infinity and undefined as writable: false.

The only difference now is how they treat redeclaration of constants. V8 throws,
others are silent about it.

http://codereview.chromium.org/6580056/diff/1/test/es5conform/es5conform.status
File test/es5conform/es5conform.status (left):

http://codereview.chromium.org/6580056/diff/1/test/es5conform/es5conform.stat...
test/es5conform/es5conform.status:47: # NaN is writable. We are compatible with
JSC.
Both Safari and Firefox have Nan, Infinity and undefined as writable: false

Where we differ now is that V8 throws on redeclaration of those globals whereas
jsc and firefox don't

[Lasse Reichstein, 2011-02-25 06:27:43]

LGTM

http://codereview.chromium.org/6580056/diff/1/test/sputnik/sputnik.status
File test/sputnik/sputnik.status (right):

http://codereview.chromium.org/6580056/diff/1/test/sputnik/sputnik.status#new...
test/sputnik/sputnik.status:190: # Should V8 throw or ignore the assignment?
We should do what Safari does.