* retcode: fix return code with syncfd and no event_fd
* Ensure we're always clearing the cap bounding set
* tests: Update output patterns for libcap >= 2.29
* Don't rely on geteuid() to know when to switch back from setuid root
* Don't support --userns2 in setuid mode
* fixes CVE-2020-5291
* fixes bsc#1168291
OBS-URL: https://build.opensuse.org/package/show/Virtualization:containers/bubblewrap?expand=0&rev=24
