Bad workaround for BOOST_NO_STDC_NAMESPACE in codecvt_null.hpp

[Andrey Semashev]

I'm trying to compile the 1.40 version of the library with MSVC 7.1 & STLPort 5.1.4 and having these errors:

boost\archive\codecvt_null.hpp(30) : error C2039: 'codecvt' : is not a member of 'operator``global namespace'''
boost\archive\codecvt_null.hpp(30) : error C2873: 'codecvt' : symbol cannot be used in a using-declaration

The problem is twofold.

1. There is namespace std opening missing after the #if defined(BOOST_NO_STDC_NAMESPACE) condition. Likewise, the closing brace should be before the matching #endif.
2. Since STLPort does import codecvt into its namespace (which aliases std), the !defined(UNDER_CE) condition is needless and causes my problems. I don't know if there are any platforms with codecvt in the global namespace, but MSVC 7.1 with STLPort is not one of them.

I attached the patch with the both fixes.

[Andrey Semashev]

The fix for archives/codecvt_null.hpp

[Robert Ramey]

fixed on my machine - assuming tests pass here, will migrate to trunk