hg: jdk-updates/jdk11u-dev: 8234809: set relro in linker flags when building with gcc

[matthias.baesken at sap.com]

Changeset: f8905f414e8d
Author:    mbaesken
Date:      2019-11-26 13:55 +0100
URL:       https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/f8905f414e8d

8234809: set relro in linker flags when building with gcc
Reviewed-by: erikj, fweimer

! make/autoconf/flags-ldflags.m4