bugfix: netlink NLMSG_DONE needs error code
bugfix: pread/pwrite in x86_64 wromg args
bugfix: nested open path mgmt
bugfix: nested open path mgmt
bugfis: portgroup syntax err was deadlock: fixed.
some bugfixes
added RTLD_GLOBAL in umnet (for libvdeplug4)
Stack fpr ptrace_test was not large enough.