* autoload.cc (CharToOemA): Remove.

(CharNextExA): Define.
	* environ.cc (codepage_init): Un-static.  Set active_codepage to
	active codepage.  Default to ansi regardless of buf pointer.
	* fhandler.h (dev_console::get_console_cp): New method.
	(dev_console::con_to_str): Change declaration according to new
	implementation.
	(dev_console::str_to_con): Ditto.
	* fhandler_console.cc (cp_convert): Remove.
	(dev_console::con_to_str): Redefine to take WCHAR as incoming console
	char.
	(dev_console::get_console_cp): Return correct codepage according to
	alternate_charset_active setting.
	(dev_console::str_to_con): Redefine to create WCHAR buffer for console
	output.
	(fhandler_console::read): Read console input as WCHARs.
	(base_chars): Fix typo in comment.
	(fhandler_console::char_command): Save and restore console output
	buffer using UNICODE functions.
	(fhandler_console::write_normal): Convert to write output in UNICODE.
	Use CharNextExA to recognize multibyte characters in input.  Workaround
	problem with UTF-8 and MultiByteToWideChar.  Simplify the loop for
	printing "normal" characters.
	* strfuncs.cc (active_codepage): New variable to store active codepage.
	(get_cp): Call codepage_init() if active_codepage is uninitialized.
	Just return active_codepage.
	(is_cp_multibyte): New function.
	* winsup.h (active_codepage): Declare.
	(codepage_init): Declare.
	(is_cp_multibyte): Declare.

winsup/cygwin/winsup.h

@@ -112,8 +112,11 @@ extern "C" DWORD WINAPI GetLastError (void);
 
 enum codepage_type {ansi_cp, oem_cp, utf8_cp};
 extern codepage_type current_codepage;
+extern UINT active_codepage;
 
+void codepage_init (const char *buf);
 UINT get_cp ();
+bool is_cp_multibyte (UINT cp);
 
 /* Used as type by sys_wcstombs_alloc and sys_mbstowcs_alloc.  For a
    description see there. */