Revert 1.18:  It broke Athlon64 builds, which probably means it also requires a .so version bump.  Defer it until I finish some related work on cleaning up error returns throughout the library.
Revert 1.18:  It broke Athlon64 builds, which
probably means it also requires a .so version
bump.  Defer it until I finish some related
work on cleaning up error returns throughout
the library.

Thanks to: Conrad J. Sabatier

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