RFR: 8161145: The min/max macros make hotspot tests fail to build with GCC 6

[Omair Majid]

Hi,

Bug: https://bugs.openjdk.java.net/browse/JDK-8161145
Webrev: http://cr.openjdk.java.net/~omajid/webrevs/8161145-gcc6-min-max-macros/00/

This patch fixes hotspot to build with GCC6 for me. With this patch, I
can build jdk9/hotspot forests with:

    $ bash ../configure --disable-warnings-as-errors --with-extra-cxxflags='-Wno-error -std=gnu++98 -fno-delete-null-pointer-checks -fno-lifetime-dse -fpermissive' --with-extra-cflags='-Wno-error -std=gnu++98 -fno-delete-null-pointer-checks -fno-lifetime-dse'
    $ make WARNINGS_ARE_ERRORS="-Wno-error" CFLAGS_WARNINGS_ARE_ERRORS="-Wno-error" all

Some of the -fno- options may not be needed anymore; I had them leftover
from previous builds.

My gcc version is: gcc version 6.1.1 20160621 (Red Hat 6.1.1-3) (GCC)

Thanks,
Omair

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