x86 Code Compression in kkrunchy

This is about the "secret ingredient" in my EXE packer kkrunchy, which was used in our (Farbrausch) 64k intros starting from "fr-030: Candytron", and also in a lot of other 64k intros or similarly size-limited productions by other groups including several well-known 64ks from other groups such as Conspiracy, Equinox and Fairlight, I'm happy to add.