Build build-tools using recipes on Linux as well

Submitted by Nirbheek Chauhan

Description

From bug 738531, it would be good for consistency to build gettext, pkg-config, yasm, bison, flex, etc on Linux as well instead of pulling them in via yum/apt/etc. Caveat: might be a little tricky to test that such a bootstrap would work (and keep working) on a vanilla system (without these tools pre-installed).