various random fixes for 8.2 - replace fedora-i386 cross compiler with debian - update cirrus MacOS image to Ventura - merge debian-native and debian-amd64 docker images - fix compile of plugins on Windows mingw cross - add some doc notes on semihosting READC - add some doc notes on gdbstub - skip loading debug symbols if we have failed - enable arm-softmmu TCG tests - don't attempt to use native cross builds for linux-user - clean up registers gdb test case (ppc64/s390x)