hg: jdk-updates/jdk11u-dev: 8217896: Make better use of LCPUs when building on AIX

[shade at redhat.com]

Changeset: 9df633d78584
Author:    ihse
Date:      2019-02-01 12:44 +0100
URL:       https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/9df633d78584

8217896: Make better use of LCPUs when building on AIX
Reviewed-by: ihse
Contributed-by: Andrew Leonard <andrew_m_leonard at uk.ibm.com>

! make/autoconf/build-performance.m4