declare builtin changes to reject -i when used with -n; readline changes to make control characters visible in search strings; readline signal handling changes to avoid data corruption and UAF; documentation updates for more consistent quoting

.gitignore

@@ -1,5 +1,11 @@
 # don't push out -i
 -i
+tests/-i
+builtins/-i
+CWRU/-i
+CWRU/old-changelogs/-i
+lib/readline/-i
+doc/-i
 
 *.save
 .DS_Store