[libvirt] [PATCH] Win32 compatibility for 0.9.11

Hello everyone, I tried to build libvirt-0.9.11 for Windows using the MSYS Build Script provided by Matthias Bolte and noticed that there were two problems which made libvirt unusable. 1) Whenever a TCP Connection is opened, libvirt will fail with “failed to set close-on-exec” (I’m using “xen+tcp” here). 2) The lib will crash most of the time, because it tries to access a null pointer. I fixed both issues with a little patch: 1) On Win32 platforms virSetInherit always returns -1, therefore failing any call which tries to set “close-on-exec”. I don’t know if there’s a Win32 equivalent of “close-on-exec”, so I just set this to return 0 instead. 2) Libvirt crashes, because TlsGetValue seems to return a NULL value sometimes. Not sure right now, if this is ok in a way or if it indicates another problem somewhere... (This might be the case, as I’m experience crashes as soon as libvirt is used in a multithreading application, though I had this with an old version as well. Will discuss that in another mail). As this is my first mail to a mailing list, please don’t hesitate to tell me, what I did wrong! By the way, should I attach the binaries for 0.9.11 in case anyone is looking for those without the need to compile them? Best Regards, Marcel