Ignore-this: 2b4006f6a77e92fe2276add458bca0c4

darcs-hash:1e2f49770df91ec47378b6debc7d21e77d178315

Ignore-this: d9d54075d05c04cf8afea7449d61000c

- Rename RUN-TESTS to RUN and export it from BABEL-TESTS.
- New test CODE-CHAR-NILNESS checks whether we can encode all
  code points below BABEL:UNICODE-CHAR-CODE-LIMIT.
- TEST-UNICODE-ROUNDTRIP: don't try to encode non-characters.
- UTF8-ILLEGAL-CODE-POSITIONS: new test adapted from MGK's UTF8
  test suite.
- Disable a few tests for CCL: UTF-8B.* and CODE-CHAR-NILNESS.

darcs-hash:a3f1502bde7c2197e22647cc69a5c784b8c8527d

- Uses DEFSTEST a lot. Should probably get rid of that.

darcs-hash:d6734b29bc2f5ad5ef370b1d4170088ce48eabee

darcs-hash:ea3f90ae7e6cd794b9063c240bdf1b69e8862144

darcs-hash:726796f92200822647df1a7938dfde74759345b1

darcs-hash:ff6075a077eec6ae1087cc934afcdf0d75afd8ad

Supported encodings: EBCDIC-US, ASCII, ISO-8859-1, UTF-8, UTF-16 and UTF-32.

darcs-hash:5cf32cbae0f59d58e2d84bcd31f0d92fae32441d