more IMF work.

IMFHeader.cpp

@@ -10,7 +10,7 @@ namespace coreutils {
       int rc = ::read(fd, &ch, 1);
       while(ch != 'r') {
 	 IMFHeaderField *headerField = new IMFHeaderField(ch, fd);
-	 headers.add(headerField);
+	 headers.push_back(headerField);
       }
       rc = ::read(fd, &ch, 1);
    }