Update Packages.php

Fill $context['new_inputs'] array with possible values from the form.
Update Subs-Package.php

Source code for using < input > (<- no whitespaces) tags in package-info.xml to allow HTML5 input tag(s) to be used in the packages install/uninstall template. 
Please see the extra new_pkgs_commands-readme.txt file for the syntax to be used.
Update Packages.template.php

This edit displays any custom inputs that were entered by the mod author using package-info.php
Create new_pkgs_commands-readme.txt

This is the explanation of changes and the syntax for using < input > tags in the package-info.xml file. The data is passed via $context['new_inputs'] array to be processed by mod authors in any file used with < code > tags.
Update new_pkgs_commands-readme.txt

Changes: 
- tabbed out text to make it more legible.
Update new_pkgs_commands-readme.txt
Update DCO.txt
updated files as current
Subs-Editor.php original