Include setjmp.h in qemu/osdep.h (bug fix for w64)

setjmp must be declared before sysemu/os-win32.h
because it is redefined there for 64 bit Windows.
Reviewed-by: NRichard Henderson  <rth@twiddle.net>
Tested-by: NAndrew Baumann <Andrew.Baumann@microsoft.com>
Signed-off-by: NStefan Weil <sw@weilnetz.de>

include/qemu/osdep.h

@@ -76,6 +76,9 @@ extern int daemon(int, int);
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <assert.h>
+/* setjmp must be declared before sysemu/os-win32.h
+ * because it is redefined there. */
+#include <setjmp.h>
 #include <signal.h>
 
 #ifdef __OpenBSD__