Fix inconsistency between DItoGI and GItoDI. ReadMappings was updating GItoDI and we didn't update DItoGI; AddDefaultMappings would then not add the keyboard mappings (since that uses DItoGI), and we'd end up with keyboard buttons half-mapped.

stepmania/src/InputMapper.cpp

@@ -652,6 +652,7 @@ static const RString DEVICE_INPUT_SEPARATOR = ":";	// this isn't used in any key
 void InputMapper::ReadMappingsFromDisk()
 {
 	m_mappings.ReadMappings( m_pInputScheme, SpecialFiles::KEYMAPS_PATH, false );
+	UpdateTempDItoGI();
 
 	AddDefaultMappingsForCurrentGameIfUnmapped();
 }