* Added SRFI-6

lib/SRFI-6.ss

@@ -0,0 +1,4 @@
+(library (SRFI-6)
+  (export open-input-string open-output-string get-output-string)
+  (import (ikarus)))
+; enough said.

lib/SRFI-6.tests.ss

@@ -0,0 +1,2 @@
+#!/usr/bin/env ikarus --r6rs-script
+(import (SRFI-6))