RFR: 8210765: Remove finalize method in CStrike.java

[Phil Race]

Remove finalize method from CStrike.java

This one is a bit odd in that there's already a Disposer used - and in fact it involves two classes
CStrikeDisposer.java and its subclass - the nested class CStrike.GlyphInfoCache
CStrike.GlyphInfoCache is tracking all the glyph image references.

CStrikeDisposer has the full set of constructors of its superclass - FontStrikeDisposer including support
for the native context

And if supplied, CStrikeDisposer will call the native method freeNativeScalerContext(long) to free the native context
but that native method does not exist !
And there's no CStrike.GlyphInfoCache constructor which allows it to be specified

So the fix is to add that and call the disposeNativeStrikePtr method instead.

I also rejigged things a little so nativeStrikePtr could be final which is supposed to help with the thread visibility.

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Commit messages:
 - 8210765

Changes: https://git.openjdk.org/jdk/pull/26397/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26397&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8210765
  Stats: 26 lines in 2 files changed: 4 ins; 12 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/26397.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26397/head:pull/26397

PR: https://git.openjdk.org/jdk/pull/26397