[+] invalid sort_type for threads.. revisit sort and limit params.
[+] stats.py can generate the sort error write a TC for that.
[+] make full_name like : module:lineno function, maybe use same syntax in callgrind output.
-[-] add support for using wall time for profiling. Lots of people download v0.53.
+[+] add support for using wall time for profiling. Lots of people download v0.53.
+[-] clock type shall be saved in save(), merging two different profile results with different clock types is
+ ambigous, prevent that.
[-] Test debug build after merging the wackou branch.
[-] add saving as pstat format.
[-] add stat tests and re-TEST again. add pstat tests.