Make P2 work on without the compatibility fragment.

[laeubi]

Fix #1091

[eclipse-equinox-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

bundles/org.eclipse.equinox.simpleconfigurator.manipulator/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 0e91764b6ecc438c9c98dd7710fd6d910d7c4bfe Mon Sep 17 00:00:00 2001
From: Eclipse Equinox Bot <equinox-bot@eclipse.org>
Date: Wed, 9 Sep 2026 07:31:07 +0000
Subject: [PATCH] Version bump(s) for 4.42 stream


diff --git a/bundles/org.eclipse.equinox.simpleconfigurator.manipulator/META-INF/MANIFEST.MF b/bundles/org.eclipse.equinox.simpleconfigurator.manipulator/META-INF/MANIFEST.MF
index cb2ef144e..b9459e406 100644
--- a/bundles/org.eclipse.equinox.simpleconfigurator.manipulator/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.equinox.simpleconfigurator.manipulator/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %bundleName
 Bundle-SymbolicName: org.eclipse.equinox.simpleconfigurator.manipulator;singleton:=true
-Bundle-Version: 2.3.700.qualifier
+Bundle-Version: 2.3.800.qualifier
 Bundle-Localization: plugin
 Bundle-ActivationPolicy: lazy
 Import-Package: org.eclipse.equinox.frameworkadmin;version="[2.0.0,3.0.0)",
-- 
2.55.0

Further information are available in Common Build Issues - Missing version increments.

[github-actions]

Test Results

   18 files  ±0     18 suites  ±0   29m 57s ⏱️ +29s
2 200 tests ±0  2 197 ✅ ±0  3 💤 ±0  0 ❌ ±0 
5 254 runs  ±0  5 245 ✅ ±0  9 💤 ±0  0 ❌ ±0 

Results for commit 867574c. ± Comparison against base commit 8200028.

♻️ This comment has been updated with latest results.

[laeubi]

Next try: Do not use PlatformAdmin at all in FrameworkAdmin and install a fallback there if the compatibility fragment is not present.