removexattr/removexattr02.c: add new testcase

1) removexattr(2) fails if the named attribute does not exist set
   errno to ENOATTR.
2) removexattr(2) fails if path is an empty string set errno to ENOENT.
3) removexattr(2) fails when attempted to read from a invalid address
   and set errno to EFAULT.

Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
4 files changed