libelf:use self hosted m4.
libelf:use self hosted m4.

Change-Id: Ia836aa6c43d7ccbb02047e63424923fdc74eb42d

veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi