add #:version (6) to rnrs bytevectors and ports

* module/rnrs/bytevectors.scm:
* module/rnrs/io/ports.scm: Add #:version (6) to these modules.

* module/6/rnrs.scm: Add versions to the import specs for bytevectors
  and ports.

module/6/rnrs.scm

@@ -218,7 +218,7 @@
 	  (rnrs arithmetic flonums (6))
 	  (rnrs base (6))
 
-	  (rnrs bytevectors)
+	  (rnrs bytevectors (6))
           
 	  (rnrs conditions (6))
 	  (rnrs control (6))
@@ -227,7 +227,7 @@
 	  (rnrs files (6))
 	  (rnrs hashtables (6))
 
-	  (rnrs io ports)
+	  (rnrs io ports (6))
 
 	  (rnrs io simple (6))
 	  (rnrs lists (6))

module/rnrs/bytevectors.scm

@@ -29,6 +29,7 @@
 ;;; Code:
 
 (define-module (rnrs bytevectors)
+  #:version (6)
   #:export-syntax (endianness)
   #:export (native-endianness bytevector?
            make-bytevector bytevector-length bytevector=? bytevector-fill!

module/rnrs/io/ports.scm

@@ -27,8 +27,9 @@
 ;;; Code:
 
 (define-module (rnrs io ports)
-  :re-export (eof-object? port? input-port? output-port?)
-  :export (eof-object
+  #:version (6)
+  #:re-export (eof-object? port? input-port? output-port?)
+  #:export (eof-object
 
            ;; input & output ports
            port-transcoder binary-port? transcoded-port