fdo#42982, Working on the UNO RuntimeExceptions.

I've updated this email as, thuswa(IRC nick).

I'm new to this and would be applying at GSOC, under the libre office
banner.

I was working on the RuntimeException, to understand a bit of the code and
how it works. I don't know whether I've got it correct but, here is the
link to the git diff.

Suggestions are welcome.

http://pastebin.com/raw.php?i=XAR4s81e

I have a few queries doesn't the RuntimeException support only 2 types of
constructor one with no parameters and one with only 1 string parameter.
Then, how does the original code have 2 exceptions listed? Was I supposed
to remove those 2 and add 1 string? I'm kind of confused. I've worked with
C++ but not too much with the Standard Library.

Thanking You,
Abeer Sethi
IRC : abeer/abeer_