[foreign-jextract] RFR: Samples update after 8249879. Added opengl sample

Tue Jul 28 11:41:47 UTC 2020

On Tue, 28 Jul 2020 11:23:50 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

> .segment/.address calls removed. added opengl sample

Looks good. I noticed that the package name used by the various samples is not consistent - some use `org.jextract`
while other go for a package name which match that of the library. Perhaps we could make this more consistent (as a
followup change).

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Marked as reviewed by mcimadamore (Committer).

PR: https://git.openjdk.java.net/panama-foreign/pull/268