OS headers need fio_file definition now

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/os/os-solaris.h b/os/os-solaris.h
index 14164b0..e292172 100644
--- a/os/os-solaris.h
+++ b/os/os-solaris.h
@@ -7,6 +7,8 @@
 #include <sys/fcntl.h>
 #include <sys/pset.h>
 
+#include "../file.h"
+
 #define FIO_HAVE_POSIXAIO
 #define FIO_HAVE_SOLARISAIO
 #define FIO_HAVE_FALLOCATE