Add C++11 std::string constructors for locales and facets.
* config/abi/pre/gnu.ver: Export new constructors.
* include/bits/codecvt.h (codecvt_byname): Add string constructor.
(codecvt_byname<char16_t>, codecvt_byname<char32_t>): Define explicit
specializations and declare explicit instantiations.
* include/bits/locale_classes.h (locale, collate_byname): Add string
constructors.
* include/bits/locale_facets.h (ctype_byname, numpunct_byname):
Likewise.
* include/bits/locale_facets_nonio.h (time_get_byname,
time_put_byname, moneypunct_byname, messages_byname): Likewise.
* src/c++11/codecvt.cc (codecvt_byname<char16_t>,
codecvt_byname<char32_t>): Define explicit instantiations.
* src/c++11/locale-inst.cc (time_put_byname, codecvt_byname):
Instantiate string constructors.
(ctype_byname): Define string constructor.
* testsuite/22_locale/codecvt_byname/1.cc: New.
* testsuite/22_locale/collate_byname/1.cc: New.
* testsuite/22_locale/ctype_byname/2.cc: New.
* testsuite/22_locale/messages_byname/1.cc: New.
* testsuite/22_locale/moneypunct_byname/1.cc: New.
* testsuite/22_locale/numpunct_byname/1.cc: New.
From-SVN: r219887
71a16cd8bc