Ignore obj like in src

sys/ only checkouts are common, especiall in got(1) times, but they don't
include the global .gitignore which is annoying.

Duplicate it here.

OK sthen

diff --git a/sys/.gitignore b/sys/.gitignore
new file mode 100644 (file)
index 0000000..eecd321
--- /dev/null
+++ b/sys/.gitignore
@@ -0,0 +1 @@
+**/obj