export input-field primitives from servlets

scheme/httpd/surflets/packages.scm

@@ -108,6 +108,8 @@
 	  form-query
 	  extract-bindings
 	  extract-single-binding
+	  generate-input-field-name
+	  make-input-field
 	  make-text-input-field
 	  make-password-input-field
 	  make-number-input-field
@@ -130,7 +132,8 @@
 	define-record-types
 	scsh
 	scheme)
-  (files servlets))
+  (files servlets
+	 input-fields))
 
 (define-interface plugin-interface
   (export main))			; MAIN gets one parameter, the REQUEST