hg: portola/portola: Change newly introduced CLIB variable names to LIBC

[mikael.vidstedt at oracle.com]

Changeset: 60ab596f309c
Author:    mikael
Date:      2017-04-27 16:00 -0700
URL:       http://hg.openjdk.java.net/portola/portola/rev/60ab596f309c

Change newly introduced CLIB variable names to LIBC

! common/autoconf/buildjdk-spec.gmk.in
! common/autoconf/platform.m4
! common/autoconf/spec.gmk.in
! make/ReleaseFile.gmk