o AIX-specific codepage names
o AIX/ppc32 uses a 16 bit wchar_t
o special support for handling cp866 on AIX: AIX only supports converting
cp866 from/to ISO8859-5 -> always use that code page as an intermediate
one on AIX (it's lossy, but better than completely failing)
* in case the default system code page cannot be detected, fall back to
UTF-8
git-svn-id: trunk@20839 -