I compiled Abi with the Turkish strings and tooltips in CP1254 under Linux. Tooltips show up properly, but the menu is missing certain letters. For instance, "Yardim" (Help; the i has no dot) shows up correctly on the tooltip, but on the menu is "Yardm".
I then changed the code to ISO-8859-9, which is identical in the character codes for Turkish diacritics. The tooltips still show up correctly, but the menu is in English. Note that we have yet no Turkish Menu_LabelSet, only strings and TB_LabelSet. I'm putting them back to CP1254 and committing a fix Alper noticed. phma
