[FriBidi] Unicode Bidi Tests

[Nico Rieck]

Hello,

I noticed the following snippet in
./test/unicode-conformance/BidiCharacterTest.c:

        if ((paragraph_dir & (1<<base_dir_mode)) == 0)
          continue;

which skips ~46k of the ~92k tests. Is this an oversight? Without this
check, all 92k tests pass except for 18 (the whole "Explicit directional
overrides applied to paired brackets" group and two others).

--Nico