RFR: 8286774: Replace openjdk.java.net with openjdk.org

Fri Jun 24 13:22:33 UTC 2022

Simple replacement of `openjdk.java.net` with `openjdk.org` everywhere (except `ASSEMBLY_EXCEPTION`, which is a legal file copied from the mainline `jdk` repo). While doing this I also fixed a few places that were using `http` rather than `https`.

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Commit messages:
 - 8286774: Replace openjdk.java.net with openjdk.org

Changes: https://git.openjdk.org/jfx/pull/803/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=803&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8286774
  Stats: 652 lines in 35 files changed: 0 ins; 0 del; 652 mod
  Patch: https://git.openjdk.org/jfx/pull/803.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/803/head:pull/803

PR: https://git.openjdk.org/jfx/pull/803