Did some minor addins.

Hi there.
I've made a few changes in my fork of your cperl-mode, such as creating a new function that
adds a new user defined style, a function to go to a line since in the cperl-mode we are using
the interactive version and Emacs complains about it.

I'd appreciate if you could review my modifications. I'd also appreciate any feedback to improve
my contribution if its quality is poor.

Edelcides