Quiet a transform whose efficiency note was dubious.
Fix CONCATENATE transform.

(concatenate 'string "constant-string" "another-constant-string") got
transformed into bad code, by overwriting the first string with the second one.

Reported by Robert Brown.
Don't heap cons the list holder cell in DELETE.
Disassembler shouldn't be too clever in picking names of "cached" functions

Allegedly human-readable names were too obfuscated to actually be useful.
Instead make the names opaque and unintelligible, but uniform in nature.