[truetype] Make trickyness checks depend on TT_USE_BYTECODE_INTERPRETER.

Based on a patch from metarutaiga (MR !106).

* src/truetype/ttobjs.c (tt_skip_pdffont_random_tag,
tt_check_trickyness_family, tt_synth_sfnt_checksum, tt_get_sfnt_checksum,
tt_check_trickyness_sfnt_ids, tt_check_trickyness): Put functions into a
`TT_USE_BYTECODE_INTERPRETER` block.
(tt_face_init): Put trickyness checks into a `TT_USE_BYTECODE_INTERPRETER`
block.

Fixes #1111.

src/truetype/ttobjs.c

@@ -140,7 +140,6 @@
 
     return error;
   }
-#endif /* TT_USE_BYTECODE_INTERPRETER */
 
 
   /* The fonts embedded in PDF changes their family names
@@ -167,6 +166,7 @@
     return name + 7;
   }
 
+
   /* Compare the face with a list of well-known `tricky' fonts. */
   /* This list shall be expanded as we find more of them.       */
 
@@ -571,6 +571,8 @@
     return FALSE;
   }
 
+#endif /* TT_USE_BYTECODE_INTERPRETER */
+
 
   /* Check whether `.notdef' is the only glyph in the `loca' table. */
   static FT_Bool
@@ -716,8 +718,10 @@
     if ( error )
       goto Exit;
 
+#ifdef TT_USE_BYTECODE_INTERPRETER
     if ( tt_check_trickyness( ttface ) )
       ttface->face_flags |= FT_FACE_FLAG_TRICKY;
+#endif
 
     error = tt_face_load_hdmx( face, stream );
     if ( error )