MFH: r421626 r421694
Replace objdump by readelf. Fixes build on arm64.
While here, refresh patches.
PR: 212308 Submitted by: emaste@ Reported by: andrew@ Differential Revision: D7842
Fixup r421626 to unbreak build on newer readelf.
Reported by: antoine@
Approved by: portmgr (feld@)