Added the cat and catp variables.

Hi,

I've been using this for over a year, and thought it was about time I contribute it back to conky.

The cat and catp will just read the contents of a file and display it in conky. This is useful if you have an independent process generating output that you want to include in conky.

The catp version parses the file, similar to what execp does compared to exec.

Best regards,

E.