Mozilla Build: My first accepted contribution to an open source project

It began in 2011, i started to review some Mozilla Build code and noticed that some scripts could be improved.

A couple of years later, they asked me if i could re-do the changes, and so i did. Although this change does not have a clearly visible impact on the Mozilla products, it improves the start up of the build environment for developers.

Here is a link to the Mozilla repository with the changes:
http://hg.mozilla.org/mozilla-build/rev/587f5ce581e5

This change as already been superseeded due to some recent developments, but some changes remained. Hurray!