DDB, INVARIENTS, WITNESS and derivatives

[John Stockdale]

Just wondering if there is any reason to still be building the
5.0-Current kernel with DDB, INVARIENTS, INVARIENT_SUPPORT, WITNESS, and
WITNESS_SKIPSPIN. I'd rather remove the debugging for speed, but not if
it will break things (like I remember the report being a little while
back).

Thanks

-John