Moved pathExists from SysCalls to path.h.
In ULTs, use unchanged pathExists and mock stat, getFileAttributesA instead.
Add Windows and Linux ULTs for pathExists.
Signed-off-by: Fabian Zwoliński <fabian.zwolinski@intel.com>
- do not release resources derived from parent process
- zeInit() in child should initilize new driver
Related-To: NEO-11761
Signed-off-by: Mateusz Hoppe <mateusz.hoppe@intel.com>