* ini.h (SETUP_BZ2_FILENAME): Reflect new architecture layout in ftp.

* ini.h (SETUP_BZ2_FILENAME): Reflect new architecture layout in ftp.
(SETUP_INI_FILENAME): Ditto.
* main.cc (Arch): New option.  Include StringOption.h for this.
(WinMain): Change is_64bit calculation to allow overriding from command-line.
Issue error if bad value provided.
* res.rc: Move some text closer together.
* splash.cc: Include ini.h.  Add architecture to opening screen.
* UserSettings.cc (UserSettings::get): Don't try to open a filename with the
name of the key.  That's old behavior.