KRandomSequence and 64-bit

[Nick Shaforostoff]

Hi all.

I see that KRandomSequence uses longs everywhere. long on 64-bit gcc systems is 8 bytes long, while int is always 4.

maybe this is ok overall, but e.g. it uses KRandom::random() return value inside, which is int. so i suppose this can actually make the sequence less random.

i propose to change the code to use ints internally, add getInt(), setSeed(int) methods and deprecate getLong and others (specifying in their documentation that they cast long to int and vice versa), and remove them completely in KDE 5.0