[LTP] [RFC PATCH 2/4] travis: Add 32 cross-compile build + use build.sh

[Cyril Hrubis]

Hi!
> +        - os: linux
> +          env: BUILD="32"
> +          compiler: gcc-6
> +          addons:
> +              apt:
> +                  sources: ['ubuntu-toolchain-r-test']
> +                  packages: ['gcc-6', 'gcc-6-multilib', 'linux-libc-dev:i386']

Can we enable this for one old compiler as well? I would expect that
apart from generic 32bit compilation failures we will end up with
problems on older 32bit distros as well.

-- 
Cyril Hrubis
chrubis@suse.cz