Disable aio in mingw32

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id: 
diff --git a/configure b/configure
index a504d58..0d43812 100755
--- a/configure
+++ b/configure
@@ -359,6 +359,7 @@
   EXESUF=".exe"
   QEMU_CFLAGS="-DWIN32_LEAN_AND_MEAN -DWINVER=0x501 $QEMU_CFLAGS"
   LIBS="-lwinmm -lws2_32 -liphlpapi $LIBS"
+  aio=no
 fi
 
 # find source path