RFR: JDK-8293711: Factor out size parsing functions from arguments.cpp [v2]

[Thomas Stuefe]

On Fri, 23 Sep 2022 07:34:09 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> > is the new version acceptable?
> 
> I would have preferred if the parsing code were not placed in a .hpp file, and would have placed it in a .inline.hpp file, to comply with our guidelines. Other than that, I'm OK with this patch.

Almost missed your comment :-)

I'll split it up as you suggested, then push.

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PR: https://git.openjdk.org/jdk/pull/10252