RFR: 8283013: Simplify Arguments::parse_argument() [v3]

[David Holmes]

On Tue, 29 Mar 2022 05:41:19 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> - Remove all the complex `sscanf()` calls in `Arguments::parse_argument()`
>> - Call the appropriate parsing function according to the type of the flag
>> - Added more test cases for flags of the `double` type.
>> 
>> As a result of this change, `double` flags can now be specified in more ways, as long as the input is accepted by `strtod()`. However, `NaN` and `INFINITY` values are not allowed because the VM probably cannot handle them. Please see the test case for details.
>> 
>> Tested with tiers 1-5.
>
> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
> 
>   moved comment

Marked as reviewed by dholmes (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7916