svn commit: r347492 - head/lib/libc/powerpc64/string

[Justin Hibbits]

Author: jhibbits
Date: Sat May 11 15:17:42 2019
New Revision: 347492
URL: https://svnweb.freebsd.org/changeset/base/347492

Log:
  revert r346588 for now
  
  The rewrite of strcmp in assembly uses an instruction added in PowerISA
  2.05, making it SIGILL on CPUs older than the POWER6, such as the PPC970 in
  the PowerMac G5.  Revert this until we get clang+lld, or retire the in-tree
  binutils in favor of newer binutils with IFUNC support, whichever comes
  first.

Deleted:
  head/lib/libc/powerpc64/string/