feat(os-final proj5-path): impl path resolve utils
feat(os-final proj5-path): impl path resolve utils

issue sabertazimi/hust-os-2017#6
issue sabertazimi/awesome-notes#27

sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab