My first large patch: Bitwise arithmetic operations in Calc

[#PATHANGI JANARDHANAN JATINSHRAVAN#]

Hi,
https://bz.apache.org/ooo/show_bug.cgi?id=126668 is my first big patch. I have 
submitted the signed CLA agreement to Apache Open Office secretary.

I would appreciate if someone can review this patch and leave comments.

Thanks
Jatin