With this patch, Travis will build/test CRIU using clang, for real.

I swear I fixed it before, but the fix was apparently lost.

travis-ci: success for series starting with [1/3] compel: mv noexecstack from CFLAGS to LDFLAGS
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>