[OpenJDK 2D-Dev] RFR: 8264047: Duplicate global variable 'jvm' in libjavajpeg and libawt

[Severin Gehwolf]

The suggestion is to rename 'jvm' variable in `libjavajpeg` to `the_jvm` so this conflict no longer occurs when `libjavajpeg.a` and `libawt.a` are being linked into one native image.

Testing: test/jdk/javax/imageio jtreg tests. GHA pre-integration tests running too.

Thoughts?

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Commit messages:
 - 8264047: Duplicate global variable 'jvm' in libjavajpeg and libawt

Changes: https://git.openjdk.java.net/jdk/pull/3155/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3155&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264047
  Stats: 14 lines in 2 files changed: 0 ins; 0 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3155.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3155/head:pull/3155

PR: https://git.openjdk.java.net/jdk/pull/3155