8232639: Change module graph images to use SVG instead of PNG format. Reviewed-by: mchung, ihse

8232712: Shenandoah: SIGBUS in load_reference_barrier_native Reviewed-by: shade, rkennke

Fix race conditation in test and add logging for TestLatestEvent

8232569: Use test image from different jib profile for testing Reviewed-by: tbell

8231844: Enhance type signature characters in classfile_constants.h and improve the JVM to use type signature characters more consistently Summary: Increase the use of type signature constants instead of hard coded characters within the JVM. Reviewed-by: coleenp, dholmes, fparain Contributed-by: lois.foltan@oracle.com, john.r.rose@oracle.com

Improve TestSetSettings.java

8232572: Add hooks for custom output dir in Bundles.gmk Reviewed-by: tbell

Add logging for parsing chunk start time

Add logging to TestSetSettings.java

Fix comments

Fix error in chunk allocation strategy which caused small chunks to dominate

Harden TestChunkGap.java

Log unknown event

8226585: Improve javac messages for using a preview API Summary: Avoiding deprecation for removal for APIs associated with preview features, the features are marked with an annotation, and errors/warnings are produced for them based on the annotation. Reviewed-by: erikj, mcimadamore, alanb Contributed-by: joe.darcy@oracle.com, jan.lahoda@oracle.com