RFR: 8236736: Change notproduct JVM flags to develop flags [v2]

[Coleen Phillimore]

> Remove the notproduct distinction for command line options, rather than trying to wrestle the macros to fix the bug that they've been treated as develop options for some time now.  This simplifies the command line option macros.
> 
> Tested with tier1-4, tier1 on Oracle platforms.  Also built shenandoah.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Clean up notproduct from tests.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18541/files
  - new: https://git.openjdk.org/jdk/pull/18541/files/c3d9a1c8..19b8f6b6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18541&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18541&range=00-01

  Stats: 37 lines in 4 files changed: 0 ins; 8 del; 29 mod
  Patch: https://git.openjdk.org/jdk/pull/18541.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18541/head:pull/18541

PR: https://git.openjdk.org/jdk/pull/18541