Warnings fixes: make, const strings in C++ tests, replace strtok by strtok_r and not write to const strings, ...
Warning fixes: add 'const' to some L&B common API functions.
Warning fixes: comparison between 'enum edg_wll_CREAMCancelStatus_code' and 'enum edg_wll_CancelStatus_code'.
Proper copy of pbs_resource_usage in state machine L&B plugin.