hg: jdk9/hs-rt: 8145427: [aix] xlc: wrong flag used to switch off optimization

[david.holmes at oracle.com]

Changeset: 201b864e0f1f
Author:    stuefe
Date:      2015-12-16 01:16 -0500
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/rev/201b864e0f1f

8145427: [aix] xlc: wrong flag used to switch off optimization
Summary: just a small typo in flags.m4
Reviewed-by: dholmes

! common/autoconf/flags.m4
! common/autoconf/generated-configure.sh