[Releasing] Decrease amounth of delivered src packages

[Jani Heikkinen]

Hi all,

As you know we need to optimize our systems to be able to keep our plans in the future. In CI side we are handling at least 4 different branches at same time. Releasing side we should be able to do many releases/snapshots parallel, test those releases/snapshots parallel etc. And all this needs lots of hw capasity (both calculating power & disc space).

We are trying to analyze the places where to do optimization and one place is our src package creation and delivery: At the moment we are doing, testing & delivering single src packages + separate submodule src packages, all these with .zip, .7z, .tar.gz & .tar.xz! Huge amount of src packages/snapshot/release. And currently doing these both for enterprise and lgpl! In the future (5.10?) we should be able to use unified ones meaning no separate LGPL & enterprise ones. 

But I think we could also drop those less used ones(*) as well with quicker schedule so I propose:

From 5.9 -> let's start doing & delivering 

- One set of src packages with ẃindows line endings (.zip, both single one & submodule specific, both enterprise and lgpl)
- One set of src packages with unix line endings (.tar.gz, both single one & submodule specific, both enterprise and lgpl)

br,
Jani

*:Download statistic:
.7z      7%
.tar.gz 44%
.tar.xz 12%
.zip     37%