Make "native" not a keyword.

Make "native" not a keyword.

We now only recognize "native function" when it occurs in extension scripts
(parsing with a non-NULL extension), and only if there is no line-terminator
between "native" and "function" (so that it would otherwise be a Syntax Error).
Preparsing never recognizes native functions, which is acceptable since we
never preparse extension scripts (because we don't allow lazy functions
anyway).

BUG=v8:1097
Committed: http://code.google.com/p/v8/source/detail?r=8326

[Mads Ager (chromium), 2011-06-20 09:24:13]

LGTM

http://codereview.chromium.org/7206020/diff/1/src/preparser-api.cc
File src/preparser-api.cc (left):

http://codereview.chromium.org/7206020/diff/1/src/preparser-api.cc#oldcode191
src/preparser-api.cc:191: 
Accidental edit?

[Lasse Reichstein, 2011-06-20 10:18:02]

http://codereview.chromium.org/7206020/diff/1/src/preparser-api.cc
File src/preparser-api.cc (left):

http://codereview.chromium.org/7206020/diff/1/src/preparser-api.cc#oldcode191
src/preparser-api.cc:191: 
Yes. Will reinsert.