This cleans up the taint flags and documentation before adding a new one for randstruct. This v2 reverts the #define->enum change as some architectures include TAINT flags in assembly source, which cannot use enums.
Patch 3/3 reads: Since the randstruct plugin can intentionally produce extremely unusual kernel structure layouts (even performance pathological ones), some maintainers want to be able to trivially determine if an Oops is coming from a randstruct-built kernel, so as to keep their sanity when debugging. This adds the new flag and initializes taint_mask immediately when built with randstruct. Thanks, -Kees