[PATCH] Fix second half of PR3655

[Paolo Carlini]

Oops...
Once more the Changelog is not ok: this time one hunk is completely missing.
Corrected thusly:

    * include/bits/locale_facets.tcc (__pad): Add bool parameter to correctly pad
    internal-adjusted const char*-type objects.
    * include/bits/locale_facts.tcc (num_put::_M_insert): Update call.
    * include/bits/ostream.tcc (operator<<(_CharT , char, const _CharT*, const char*,
    const basic_string&): Update calls.
    * src/locale-inst.tcc: Update declarations.
    * testsuite/27_io/ostream_inserter_arith.cc (test04): Add test.

Sorry!
Paolo.