[PATCH v6 0/4] Support non-WIN32 systems lacking poll()

Here's now my updated series of patches to make the win32 implementation of 
poll() available to other platforms:

1 - make poll available for other platforms lacking it by moving it into a 
separate directory and adjusting Makefile
2 - fix some win32 specific dependencies in poll.c by #ifdef the inclusion 
of two header files
3 - poll() exits too early with EFAULT if 1st arg is NULL, as fixed in 
gnulib recently
4 - make poll() work on platforms that can't recv() on a non-socket, namely 
HP NonStop, as fixed in gnulib recently


Bye, Jojo