Improve GLOBALDB-SXHASHOID
Build the cross-compiler without all the disassembler nonsense

This takes ~2 sec. off compilation of x86/insts for the host
Change the default for *DISASSEM-LOCATION-COLUMN-WIDTH* to NIL.

One out of one hacker surveyed said it looked good to him.
Maybe fix the ppc disassembler I hope.

This was a case of unconventional indentation fooling the reader (me)
into thinking a define-instruction appeared as a truly-top-level form.
Change COND error message.

COND reports an error saying the clause is not a list even when it's
NIL, which is in fact an empty list.

Fix this by stating instead that clause is not a CONS. Also use
simple-type-error for the error.

Fixes lp#1254511