This reverts commit 04caeff12f5e471519082b1c5f3020943df136db.
Medical science made some advances by leaps and bounds. The nash code is
more aggressive with the allocator and leaves more garbage around for
e.g. u2_term_io_init to trip over.
This reverts commit f691d25bd23716e9411288d3eb9bd4c9b9d33ae1.
Oddly, this causes a failure to boot, on some linux, for some reason
heretofore unknown to medical science.