GUASI IO engine

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/Makefile b/Makefile
index 0cb82e3..a44c0ca 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@
 OBJS += engines/null.o
 OBJS += engines/net.o
 OBJS += engines/syslet-rw.o
+OBJS += engines/guasi.o
 
 INSTALL = install
 prefix = /usr/local