Fix Unicode Win32 API calls in cord de_win

* cord/tests/de_win.c (FullAppName): Remove global variable.
* cord/tests/de_win.c (szAppName): Turn into macro; use TEXT().
* cord/tests/de_win.c (de_error): Force calling ANSI version of
MessageBox; remove casts to LPSTR.
* cord/tests/de_win.c (WinMain): Use TEXT() for lpszMenuName field and
for CreateWindow agrument.
* cord/tests/de_win.c (WndProc): Use TEXT() for DialogBox argument;
force calling ANSI version of TextOut.
Add support for OpenRISC/or1k

* include/private/gcconfig.h (OR1K, mach_type_known, CPP_WORDSZ,
MACH_TYPE, OS_TYPE, DYNAMIC_LOADING, _end, DATAEND, __data_start,
DATASTART, ALIGNMENT, HBLKSIZE, LINUX_STACKBOTTOM): Define for __or1k__.
Update AUTHORS file