update .gitignore for ocaml binaries
diff --git a/.gitignore b/.gitignore
index cc6a940..0e8174c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,6 +38,11 @@
 bindings/ocaml/test_mips
 bindings/ocaml/test_x86
 bindings/ocaml/test_detail
+bindings/ocaml/test_ppc
+bindings/ocaml/test_sparc
+bindings/ocaml/test_systemz
+bindings/ocaml/test_xcore
+
 
 # test binaries
 tests/test