[Rev 01] 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

The pull request has been updated with 1 additional commit.

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Added commits:
 - 1c7a4eb1: Add support for seek when the protocol is "resource"

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/109/files
  - new: https://git.openjdk.java.net/jfx/pull/109/files/c334ba81..1c7a4eb1

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/109/webrev.01
 - incr: https://webrevs.openjdk.java.net/jfx/109/webrev.00-01

  Stats: 8 lines in 1 file changed: 6 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