bug fix for TeX backend

[apg@demos.net (Paul Antonov)]

Greetings,

there's a bug in TeX backend - TeXFOTBuilder::preserveSdata_ being
used uninitialized, and this caused a very strange behaviour sometimes
(Jade generated Unicode character codes for entities like ™
instead of entity names used in Jadetex). Minor changes in the document
triggered this bug forth and back again, and that was very annnoying :)

This is a patch for jade-1.1.

-- Paul

*** jade/TeXFOTBuilder.cxx.orig      Wed Mar 11 14:46:29 1998
--- jade/TeXFOTBuilder.cxx   Wed Mar 11 14:47:52 1998
***************
*** 593,599 ****
  ////////////////////////////////////////////////////////////////////////
  
  TeXFOTBuilder::TeXFOTBuilder(OutputByteStream *o, Messenger *mgr)
! : fileout_(o), mgr_(mgr)
  {
    os() << "\\FOT{}";
  }
--- 593,599 ----
  ////////////////////////////////////////////////////////////////////////
  
  TeXFOTBuilder::TeXFOTBuilder(OutputByteStream *o, Messenger *mgr)
! : fileout_(o), mgr_(mgr), preserveSdata_(true)
  {
    os() << "\\FOT{}";
  }