gdbstub and testing fixes for 8.2 (pre-PR) This is the current state for my maintainer queue my first 8.2 PR now the tree is open. It includes the previous testing/next fixes as well as some more cleanups to modernise the gdbstub tests and code. It also includes Matheus' fixes for SIGINT. v3 - added r-b tags - review comments for get_feature_xml I'd like to send the PR this week so please review the following patches: - gdbstub: refactor get_feature_xml - tests: remove test-gdbstub.py - tests/tcg: remove quoting for info output