- replace ttmkfdir-3.0.9-defautl_enc_size.patch and
      ttmkfdir-3.0.9-crashplus.patch with ttmkfdir-3.0.9-fix-crash.patch
      to fix missing native encodings of fonts
      (Akira Tagoh, #143941)
    - buildrequire flex
    - add ttmkfdir-3.0.9-warnings.patch to silence most of compiler warnings