This patch fixes the editor project to search mozilla/editor/txtsvc before mozilla/libeditor/, adds nsFilteredContentIterator.cpp, and adds #error to the unused files. r=jfrancis@netscape.com sr=kin@netscape.com git-svn-id: svn://10.0.0.236/trunk@135173 18797224-902f-48f8-a5cc-f745e15eee43