Added preference for change of language with change of keyboard and fixed handling of bidi preferences in win32 dialogue.
files: xap_Prefs_SchemeIds.h, ap_Dialog_Options.h/cpp, ap_Win32Dlg_Options.h/cpp, ap_Win32Res_DlgOptions.rc2, xap_String_Id.h, xap_Win32FrameImpl.cpp. Tomas
