RFR: 8238755: allow to create static lib for javafx.media on linux

[Johan Vos]

* add support for the "resource" protocol (which is used in the GraalVM URLs pointing to statically bundled resources)
* avoid duplicate symbols with different gst plugins
* statically register gst plugins

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Commits:
 - c334ba81: Fix for JDK-8238755

Changes: https://git.openjdk.java.net/jfx/pull/109/files
 Webrev: https://webrevs.openjdk.java.net/jfx/109/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8238755
  Stats: 32 lines in 6 files changed: 30 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jfx/pull/109.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/109/head:pull/109

PR: https://git.openjdk.java.net/jfx/pull/109