Added get_memory_percent() test cases. Also added coverage for other functions (get_cpu_percent(), get_cpu_times()  is_running()), in zombie_process and fetch_all tests.
Added get_memory_percent() test cases.
Also added coverage for other functions (get_cpu_percent(), get_cpu_times()  is_running()), in zombie_process and fetch_all tests.

git-svn-id: 9f18dd852162ff6c59c5533c0914e9cf81af9e7c@299 d8a29897-7e4b-0410-a74a-8bb4c295346f

tamentis/psutil,hybridlogic/psutil,hybridlogic/psutil,hybridlogic/psutil,tamentis/psutil