[foreign-memaccess+abi] RFR: Add additional tests

[Per Minborg]

On Fri, 17 Feb 2023 13:03:08 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR adds yet other tests.

src/java.base/share/classes/java/lang/foreign/MemorySegment.java line 568:

> 566:      * @throws IndexOutOfBoundsException if {@code offset < 0}, or {@code offset > byteSize()}.
> 567:      */
> 568:     default MemorySegment asSlice(long offset) {

The interface is sealed and this method is always overridden. So, no need for a default method.

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PR: https://git.openjdk.org/panama-foreign/pull/801