Split assert into "static check" and "missing code" variants.
Split assert into "static check" and "missing code" variants.

The "missing code" variants have xxx prefix

Introduce AN() (assert non-null) variant as well.



git-svn-id: 7d4b18ab7d176792635d6a7a77dd8cbbea8e8daa@911 d4fa192b-c00b-0410-8231-f00ffab90ce4

ssm/pkg-varnish,wikimedia/operations-debs-varnish,wikimedia/operations-debs-varnish,CartoDB/Varnish-Cache,CartoDB/Varnish-Cache,wikimedia/operations-debs-varnish,ssm/pkg-varnish,CartoDB/Varnish-Cache,ssm/pkg-varnish,wikimedia/operations-debs-varnish,ssm/pkg-varnish,wikimedia/operations-debs-varnish,ssm/pkg-varnish