[Rev 03] 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 4 additional commits.

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Added commits:
 - 21ac3de9: Only allow the resource protocol to be used when we are in a statically linked image
 - a76b7c3d: Merge branch '8238755-staticmedia' of github.com:johanvos/jfx into 8238755-staticmedia
 - 3722e488: Merge branch '8238755-staticmedia' of github.com:johanvos/jfx into 8238755-staticmedia
 - 03759cfb: add check for GSTREAMER_LITE

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/109/files
  - new: https://git.openjdk.java.net/jfx/pull/109/files/d95cf4cd..21ac3de9

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/109/webrev.03
 - incr: https://webrevs.openjdk.java.net/jfx/109/webrev.02-03

  Stats: 16 lines in 3 files changed: 13 ins; 0 del; 3 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