Added thread fix for AIX...This fixes the inheritance problem we saw in PAPI 2.3.4...by the way, seems like we can get rid of the memcpy in hwd_start...
Added thread fix for AIX...This fixes the inheritance problem we saw in PAPI 2.3.4...by the way, seems like we can get rid of the memcpy in hwd_start...

pyrovski/papi,pyrovski/papi,arm-hpc/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi,pyrovski/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi,arm-hpc/papi,arm-hpc/papi,pyrovski/papi,pyrovski/papi,pyrovski/papi