1.1.22: Aug 23 2007:
   - Bug fixes: RVT cleanup problems (William Brack), exclude-result-prefix
      bug (William Brack), stylesheet compilation error handling (Rob Richards).
      
   - Portability fixes: improve build with VS2005 (Rob Richards), 
      fixing build on AIX (Bjorn Wiberg), fix the security file checks on
      Windows (Roland Schwarz and Rob Richards). 
   - Improvement: add an --encoding option to xsltproc (Drazen Kacar).