RFR: 8261031: Move some ClassLoader name checking to native/VM [v3]

[Coleen Phillimore]

On Thu, 11 Feb 2021 12:44:54 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> This patch moves some sanity checking done in ClassLoader.java to the corresponding endpoints in native or VM code.
>
> Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Consolidate verifyClassname and verifyFixClassname

This more limited cleanup looks good.

-------------

Marked as reviewed by coleenp (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2378