Description of Problem:
jw can't handle both the -d and -o options at once.

Version-Release number of selected component (if applicable):
docbook-utils-0.6.9-2

How Reproducible:
100%

Steps to Reproduce:
1. jw -f docbook -b html -o html -d file.dsl file.sgml

Actual Results:
Command fails.

Expected Results:
Command puts output in html/ and uses file.dsl as its stylesheet.

Additional Information:
This is because jw actually enters the output directory before calling 
the backend.  It should convert relative file names to absolute file 
names before doing so.