ICU 4.6 NumberFormat::EStyle enum is gone in ICU 4.8. Adding #if #else to make it work across ver...

ICU 4.6 NumberFormat::EStyle enum is gone in ICU 4.8. Adding #if #else to make it work across versions.

There was an ICU cleanup (removing all C++ style enums and replacing them with plain C enums). NumberFormat::EStyle had a draft status (from ICU 4.2) and it was cut. Confusion came up because DateFormat::EStyle is stable and won't be removed.

TEST=Compile Chromium with ICU 4.6 and ICU 4.8
BUG=1561
Committed: http://code.google.com/p/v8/source/detail?r=8701

[Mads Ager (chromium), 2011-07-19 09:15:48]

LGTM, but please wait for Jungshik's review.

[jungshik at Google, 2011-07-19 20:23:44]

LGTM !