* doc/README_details.txt: Fix typo ("libatomic_ops_gpl.a").
are implemented by header files included from it. It is sometimes
necessary, and always recommended to also link against libatomic_ops.a.
To use the almost non-blocking stack or malloc implementations,
-see the corresponding README files, and also link against libatomic_gpl.a
+see the corresponding README files, and also link against libatomic_ops_gpl.a
before linking against libatomic_ops.a.
OVERVIEW: