On Linux, this requires that gdb can be found in PATH, and that no
kernel security settings like yama.ptrace_scope prevent it.
Patch contains also a drive-by architecture detection fix for Debian arm64.
Fixes: QTQAINFRA-6029
Fixes: QTQAINFRA-5940
Fixes: QTQAINFRA-6030
Fixes: QTQAINFRA-6046
Fixes: QTQAINFRA-6012
Fixes: QTQAINFRA-5930
Task-number: QTQAINFRA-5933
Change-Id: Ie6debde94c1cc5783161ffa7354b58734c372702
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Toni Saario <toni.saario@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Dimitrios Apostolou