DRAFT: print backtrace of cost center stack on SIGQUIT - alternative to !4787 addressing #15774

This is an alternative to !4787 addressing #15774

• are either individually buildable or squashed
• have commit messages which describe what they do (referring to [Notes][notes] and tickets using #NNNN syntax when appropriate)
• have added source comments describing your change. For larger changes you likely should add a [Note][notes] and cross-reference it from the relevant places.
• add a testcase to the testsuite.
• replace this message with a description motivating your change