Table size min was set to <=4 items, but readelf on ubuntu20
had a switch table with exactly 4 elements.  This caused
FII to miss the table size and subsequently include _many_ extra IBTs.
Ultimately, Zipr failed by trying to 68-sled an entire function due to
FII's failure.

Enhancement: Make rida support enhanced PLTs

See merge request !11

Starting in new(er) versions of Ubuntu distros, PLT entries use
the bnd prefix to make sure that jump targets are in bounds. This
patch adds conditional support for those PLT styles.