RFR: 6946: There should be an option to build the agent in the build script [v5]

[Miroslav Wengner]

On Wed, 16 Dec 2020 19:57:55 GMT, Miroslav Wengner <mwengner at openjdk.org> wrote:

>>> seem the whole script was since the beginning not windows ready. would not be better to create a new ticket ? As this is not really related to this one, what do you think ?
>> 
>> There is `build.bat` script for windows
>
> I've updated the win script, but we need to test it on windows machine. I don't have any. I've not found the simple way of parsing the java version to run different types of examples, therefore I've omitted such option for the win sritpt.

I've add an option "--installCore" for both

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PR: https://git.openjdk.java.net/jmc/pull/183