. Adjust README for SuSE Linux 8.0.

. Add index support as proposed by Martin Vidner.

. Better error recovering: check whether needed programs are actually
  installed.

. Think about `jade -t xml'.

. Re-write do_xml() (s2x).

. db2x.sh.in:

  - check for CATALOG files.

  - Allow own driver files.

  - Provide an interface to jade variable (jade -V xxx). (done -ke-).

  - Provide an interface to dvips options.

  - Implement a -q, --quiet mode (started).
