pev v1.1

Minor fixes

• Fix leaking for local variable running
• Fix build on macOS, does not have SOCK_CLOEXEC
• Handle EINTR when reading (signal/timer) from event pipe
• Use BSD semantics for signals, restart syscalls automatically
• Support Illumos/OpenSolaris, simplify default Makefile
  • You now may need to set CC and prefix environment variables to build and install, respectively
• Support *BSD
  • Verified on OpenBSD, FreeBSD, and NetBSD