[PATCH] Several tweaks for R6RS ports

[Andreas Rottmann]

Hi!

Here's a few patches related to R6RS port support, in short:

- Add missing `get-string-n!' and `get-string-n'
- Fix a few missing exports
- A bit of work on transcoder-related stuff

See the patch headers for details.  

The patches are attached in the order they should be applied, although
"get-string-n.diff" and the other two have been developed independently,
so applying them in this order will result in offsets and fuzzyness for
the later patches.  If there are issues with that, apply either
"get-string-n" or both of "rnrs-io-current-ports" and
"rnrs-transcoders", and come back to me, so I can regenerate the
remaining patches to make them apply cleanly.

get-string-n.diff
Description: Text Data

rnrs-io-current-ports.diff
Description: Text Data

rnrs-transcoders.diff
Description: Text Data

Regards, Rotty
-- 
Andreas Rottmann -- <http://rotty.yi.org/>