Merging r197061:

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r197061 | marshall | 2013-12-11 11:32:32 -0800 (Wed, 11 Dec 2013) | 1 line

Move std::begin(array) and std::end(array) out from under an #ifdef that was preventing people from building libc++ using gcc. This corrects a mistake that I introduced in r196058
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llvm-svn: 197134