hg: jdk9/dev: 8065648: Remove the flag -fsanitize=undefined for GCC 4.9 and later

[erik.helin at oracle.com]

Changeset: 281f68758113
Author:    ehelin
Date:      2014-11-24 14:44 +0100
URL:       http://hg.openjdk.java.net/jdk9/dev/rev/281f68758113

8065648: Remove the flag -fsanitize=undefined for GCC 4.9 and later
Reviewed-by: erikj

! common/autoconf/flags.m4
! common/autoconf/generated-configure.sh
! common/autoconf/toolchain.m4