Updated Copyright in: "cputool.c" and "cputool.h"

Copyright updated to 2015 in "cputool.c" and "cputool.h".

See merge request !1

* Make sure we continue execution when we exit
* Cleared up some debug info

Added an examples section and warned people to use -l with TCP network
connection.

I cleaned up the source a bit, added --version and made the options
parsing (-p / -P and command specified) a bit more robust. I also wrote
a man page.

* Fixed (double) cast, it should be (long double)
* Reduce precision of statsTimeDelayed

* Added support for dynamic tickBucketMax size
* Initialize tickBucket with the max number of ticks allowed
* Error checking on -c/--cpu-limit & -l/--load-limit
* More verbosity on -vv to display our limits

* Changed gettimeofday to clock_gettime which is monotonic
* Changed integer usage to use uint*_t and other standard types
* Updated configure.ac to better detect the environment