- Applied a patch from Ulrich for BSD systems

- include pthread.h when trying to use it
  - Linux and BSD systems use SIGIO instead of SIGPOLL

src/main.c

@@ -49,6 +49,7 @@
 	#include <mntent.h>
 #elif defined(__FreeBSD__) || defined(__bsd__) || defined (__NetBSD__)
 	#include <fstab.h>
+	#include <pthread.h>
 #elif defined(__sun__)
 	#include <sys/file.h>
 #endif
@@ -57,6 +58,14 @@
 # include <dlfcn.h>
 #endif
 
+/* This should probably go into configure
+ * BSDs and Linux have SIGIO, Solaris needs SIGPOLL
+ * This should probably be changed the other way round
+ * SIGIO as default and SIGPOLL only for Solrais */
+#ifndef SIGPOLL
+#define SIGPOLL SIGIO
+#endif
+
 #include "qcommon.h"
 #include "game.h"
 #include "rw.h"