Update INSTALL.md for 2.2.2
Fix crash when accessing invalid fields

fixes #8104
Compat: Fix event_handler_enabled dump based on enable_event_handler attribute

fixes #8105
Fix crash in ConfigCompilerContext::WriteObject

fixes #8106
Clean up the DebugInfo class

refs #7709
Refactor the WorkQueue class to make error reporting easier

refs #7709
Remove obsolete code

refs #7709
Redesign validators (WIP)