new Makefiles for documentation;
   user_{input,output,error} streams are now aliases;
   restore YapLibDir
   support $(DESTDIR)
   fix call_residue/2
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@8 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
		
	
new Makefiles for documentation;
   user_{input,output,error} streams are now aliases;
   restore YapLibDir
   support $(DESTDIR)
   fix call_residue/2
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@8 b08c6af1-5177-4d33-ba66-4b1c6b8b522a