<AWT Dev> RFR: 8257853: Remove dependencies on JNF's JNI utility functions in AWT and 2D code [v6]

[Phil Race]

> This defines some macros to support declaring and initialising statically allocated instances of jclass, jmethodID and jfieldID
> and changes many existing uses of JNF macros/functions to use these instead.
> Then calls to JNFCall* and JNFNewObject - etc are updated to directly call JNI methods
> JNI exception checking macros are added as needed.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8257853: Remove dependencies on JNF's JNI utility functions in AWT and 2D code

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1679/files
  - new: https://git.openjdk.java.net/jdk/pull/1679/files/b79f8bcc..346cf1ab

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1679&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1679&range=04-05

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1679.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1679/head:pull/1679

PR: https://git.openjdk.java.net/jdk/pull/1679