With the assistance of Sum1 and dom, I was able to fix the issue in Preference dialog Language listing. Now I could see all the languages listed, so that I can test the Abiword Unicode Windows Application in Ubuntu/Wine, or Windows in non-latin languages. As mentioned in my proposal, I will use Arabic and Indic Languages for testing. I will be able to fix the bugs in the dialogs more effectively, henceforth.
So I thought of sharing some screeshots, depicting my progress.
Abiword ANSI Windows program in Arabic.
Abiword Unicode Windows program in Arabic. [In Ubuntu/Wine]
Abiword Unicode Windows program in Arabic. [In Windows XP]
Abiword Unicode Windows Preference Dialog in Arabic.
Menubar in Crotian:
After the port, the [non-latin] special characters of the language were displayed properly.