Comment 1 for bug 1231110

It seems the only way to use these options is to pass them like --numa_interleave and --flush_caches (without arguments) to mysqld_safe at the command line.

Verified by code review of mysqld_safe.sh:

...
      --syslog-tag=*) syslog_tag="$val" ;;
      --timezone=*) TZ="$val"; export TZ; ;;
      --flush-caches) flush_caches=1 ;;
      --numa-interleave) numa_interleave=1 ;;
...

and tests on recent PS 5.5 and 5.6.