hg: jdk8u/jdk8u-dev: 8217896: Make better use of LCPUs when building on AIX

[sgehwolf at redhat.com]

Changeset: 2cd484c5b7f8
Author:    aleonard
Date:      2019-08-22 17:51 +0100
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/2cd484c5b7f8

8217896: Make better use of LCPUs when building on AIX
Reviewed-by: sgehwolf, andrew
Contributed-by: andrew_m_leonard at uk.ibm.com

! common/autoconf/build-performance.m4
! common/autoconf/generated-configure.sh