Deployment of upstream library sources

[Roman Iten]

Hi,

we need a way to provide upstream library sources (i.e. the 
"contrib"-directory) in an environment without internet access.

In order to make this task reasonably comfortable, I miss three features 
in the prepare tool:

1. Similar to "make -C ./build ...", "make prepare -C ./build" will 
download all upstream sources required by the corresponding build.conf 
file.

2. "make prepare ... --download-script download.sh" won't download 
anything, but instead creates a script file which can be transferred to 
a PC connected to the internet. There you can execute the script in 
order to download the sources. The download directory can then be 
transferred into the offline environment.

3. "make prepare ... --unpack [/path/to/download_dir]" unpacks the 
downloaded upstream libraries to the local contrib directory.

What do you think? Is something like this possible? Or do you have any 
other ideas/suggestions?

Regards
Roman