RFR: 8247947: Build DirectShow Samples (Base Classes) from source checked into repo

Fri Jun 26 23:07:53 UTC 2020

On Thu, 25 Jun 2020 23:19:05 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

> - Added DirectShow baseclasses to repository.
> - Dependency on Windows SDK 7.1 DirectShow baseclasses was removed.

Looks good. I was able to do a build and test with the patch applied. I confirm that it now builds without needing
`C:/Program Files/Microsoft SDKs/Windows/v7.1`.

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Marked as reviewed by kcr (Lead).

PR: https://git.openjdk.java.net/jfx/pull/254