* fix: Bug for getrusage return incorrect ru_maxrss
* fix: Bug for getrusage(RUSAGE_CHILDREN) return parent info
(POSTK_DEBUG_TEIX_72)
* fix: Bug for getrusage often return incorrect ru_stime
Refs: #1032
Refs: #1033
Refs: #1034
Change-Id: Ifba95e4cb48ae551839819eb3abe26b37da4b196