[Bf-committers] Making test builds for WIP projects.

[Bastien Montagne]

Hi fellow devs,

This week we set up a way to make test builds on the buildbots (meaning 
you get release-like archives, easy to distribute! :) ).

Here are the steps to follow:
* Checkout the 'testbuild' branch, apply your code to it (probably by 
reseting it to master and then squash-merging in your own work);
* Push your changes on remote repo;
* Go to one of the buildbot's builders' page (e.g. 
https://builder.blender.org/builders/linux_glibc211_x86_64_scons) - note 
you'll need to do that for all platforms you want to build on.
* Select 'testbuild' instead of 'master' in the branch dropdown, and 
force the build.
* Note you can also force a given revision, can be handy as it means you 
can still build your work even if someone has overriden it in testbuild 
branch.
* Download your testbuild as soon as it is finished! It will be replaced 
by the next test build (for a given builder).

Quite obviously, let's try not to abuse the feature! :)