fpathconf/fpathconf01.c: cleanup

cleanup of fpathconf01.c

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
fpathconf/fpathconf01.c: add new test

add new test in fpathconf01.c:
_PC_CHOWN_RESTRICTED
_PC_NO_TRUNC

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>