Bug: gnu.mail.util.QPOutputStream encodes linebreaks

Hi,

I believe I've found a bug in the QPOutputStream code. When it comes 
across a line break both "\r\n" and "=0D=0A" are being output resulting 
in extraneous new lines.

The fault appears to lie in the write( int b ) method. If b=='\r' or 
b=='\n' the last if block should be avoided as the outputCRLF() will 
have already done what's required.

Regards
Andy Wu