Revert "Oops, we're 3.4.0"

This reverts commit bd10bed24b6e2da146b0b92a92368ff1bb8a3c58.
Revert "Makefile: use Cl3Kener's makefile"

This reverts commit d31e001688127e72817459f53ac3184dfae98260.
arm: lib: add back memset.o
Makefile: cleanup