CLEANUP: don't ignore scripts in .gitignore

We'll store a few maintenance scripts in scripts/ so don't ignore it.
diff --git a/.gitignore b/.gitignore
index b9d630c..62f0540 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@
 !/src
 !/tests
 !/debian
+!/scripts
 # Reject some generic files
 *.o
 *~