Unlearning default CVS ignore pattern

 Hi guys

 At e.g. http://www.network-theory.co.uk/docs/cvsmanual/cvsignore.html
 we see that CVS has a default set of patters for ignoring files;
     RCS     SCCS    CVS     CVS.adm
     RCSLOG  cvslog.*
     tags    TAGS
     .make.state     .nse_depinfo
     *~      #*      .#*     ,*      _$*     *$
     *.old   *.bak   *.BAK   *.orig  *.rej   .del-*
     *.a     *.olb   *.o     *.obj   *.so    *.exe
     *.Z     *.elc   *.ln
     core

 I have a project, where I need CVS to also consider .so-files.
 How is it possible to unlearn/change the default ignore patterns?
 Either in the distribution side or in user land...

 Best

-- 
 Peter Toft, PhD
 http://petertoft.dk