Preparation work for 4.26 (2022-12) and open master for development

[SDawley]

This preparation work involves the following tasks. For previous bug please refer to #284.

• Create R4_25_maintenance branch #512
• Move 4.25-I and 4.25-Y builds to R4_25_maintenance branch #528
• Update Parent pom and target sdk deployment jobs for R4_25_maintenance branch #526
• Create new test jobs for 4.26 #531
• Configure SWT build scripts for 4.26 #525
• Splash Screen for 4.26 (2022-12) #527
• Create 4.26-I-builds repo #513
• POM and product version changes for 4.26 release #514
• Update product version number to 4.26 across build scripts #515
• Move previous version to 4.25RC2 across build scripts #522
• Update version number in Mac's Eclipse.app for 4.26 #516
• Disable the freeze report for 4.26 #521
• Clean forceQualifierUpdate files for doc bundles #520
• Cleanup approved api list #517
• Update builds and repo cleanup scripts for 4.26 #519
• Create new I-build job for 4.26 release #530
• Update check composites script to verify 4.26 repositories #518
• Update Comparator repo and eclipse run repo to 4.26-I-builds repo #532
• Version bumps for 4.26 stream #540
• Update previous release version to 4.25 GA across build scripts #560
• Update build calendar for platform 4.26 release #556
• Deploy ecj compiler from 4.25 GA and use it for 4.26 M1 build #561
• Update generic repos I-builds, Y-builds, P-builds to point to 4.26 repos #562

[sravanlakkimsetti]

All tasks have been completed