hg: jdk/sandbox: 8220388: Increase -inlinehint-threshold for Clang to avoid G1 pause time regression

[chris.hegarty at oracle.com]

Changeset: 5b1eec609909
Author:    manc
Date:      2019-03-08 18:21 -0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/5b1eec609909

8220388: Increase -inlinehint-threshold for Clang to avoid G1 pause time regression
Summary: Make Clang inline more aggressively for functions with inline keyword
Reviewed-by: erikj, jiangli, shade

! make/autoconf/flags-cflags.m4