Bugfixes:

• Fix a bug causing DTrace to fail to terminate if a process was grabbed using -c, then died while traced with ustack(), usym() or umod() or by the pid or usdt providers.

Compilation fixes:

• Compile on glibc 2.28, which moves makedev() out of <sys/types.h>.

• Improvements to the testsuite in the presence of recent versions of GNU Awk.