Purpose:
When doing a PXE BootCD installation, you may be left without networking, usb and a cd drive.
This adds an easy way to include a few or more files to the installation which are then present on the disk after the installation and which does not require any change to ReactOS source code/build script files (and no manual editing of boot/bootdata/packages/reactos.dff.in).
Proposed changes:
Adds a new modules/3rdparty folder which lets the files end up in C:\ReactOS\3rdParty ready for use.