Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/doc/sefun/obsolete/exclude_alist b/doc/sefun/obsolete/exclude_alist
new file mode 100644
index 0000000..a967a14
--- /dev/null
+++ b/doc/sefun/obsolete/exclude_alist
@@ -0,0 +1,4 @@
+SYNOPSIS:
+	mixed *exclude_alist(int i, mixed *alist)
+
+Remove element i from alist.