- code restructured: move code from builder_package to _create

sample/builder-targets-cb.sh

@@ -15,7 +15,7 @@
 #
 # Abstract:
 #  target order: config, prepare, retrieve, create, package, publish, commit, cleanup
-#  callbacks: cb_package_makeproductfile
+#  callbacks: <none>
 #
 ##############################################################################
 
@@ -45,10 +45,6 @@ function package() {
     builder_package
 }
 
-function cb_package_makeproductfile() {
-    echo "May add/replace files to the files to $inst_dir"
-}
-
 function publish() {
     echo "Publish"
     builder_publish