Updated file listings for build

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>
Fixed a bug in urt_get_exec_time in linux

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>
Some documentation done

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>