[4suite] Setting the encoding error handler

[nico]

Hello,

When applying a stylesheet with an output encoding set to latin1, the  
compilation raises the error UnicodeEncodeError: 'latin-1' codec can't  
encode character u'\u201c'.

It's a normal behaviour, but would it be possible to add an  
attribute/method to the Processor class so that the user could choose the  
codecs error handling to use?

Another common XSLT behaviour (xsltproc, xalan) is to apply the  
'xmlcharrefreplace' error handling so that the file still compiles even if  
some entities cannot be translated.

What do you think?

Regards,
BG