[SMS D-Bus 02/23] util.h: Add BUILD_BUG_ON() and friends for compile-time assert checking

[Marcel Holtmann]

Hi Inaky,

> These have been stolen from the Linux kernel source; come pretty handy
> to make build-time consistency checks and thus avoid run-time
> surprises.
> ---
>  src/util.h |   28 ++++++++++++++++++++++++++++
>  1 files changed, 28 insertions(+), 0 deletions(-)

I still think that using include/bug.h is way better. And that way we
could more easily sync this with ConnMan. Since this might come in handy
for ConnMan as well.

Regards

Marcel