Mark sapi/servlet as what it is: experimental.

diff --git a/sapi/servlet/EXPERIMENTAL b/sapi/servlet/EXPERIMENTAL
new file mode 100644 (file)
index 0000000..293159a
--- /dev/null
+++ b/sapi/servlet/EXPERIMENTAL
@@ -0,0 +1,5 @@
+this module is experimental,
+its functions may change their names 
+or move to extension all together 
+so do not rely to much on them 
+you have been warned!