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* Make the results of the top-level configure.ac test for _SC_NPROCESSORS_ONLN be cached so that we can check for it elsewhere (e.g., opal/mca/paffinity/posix/configure.m4) * Update top-level configure.ac test for _SC_NPROCESSORS_ONLN: stamp out another AC_TRY_COMPILE * Ensure paffinity:posix doesn't even try to compile if we don't have _SC_NPROCESSORS_ONLN * Minor style updates This commit was SVN r19118.