drop need for __NR_time

Also cleans up tests and other logic.

Signed-off-by: Kees Cook <keescook@chromium.org>
do not change SECCOMP_RET defines if they're known

Signed-off-by: Kees Cook <keescook@chromium.org>
Makefile: clean up targets add "clean"

Signed-off-by: Kees Cook <keescook@chromium.org>
avoid gcc warning about type changes

Signed-off-by: Kees Cook <keescook@chromium.org>
Merge pull request #1 from kees/master

Pull in fixed from Kees, incl. nuking some of the vdso hack testing.