add intel/2014b toolchain definition, which includes GCC/4.8.3 as a dependency

depends on https://github.com/hpcugent/easybuild-easyblocks/pull/429 to ensure that FFTW wrappers libraries for Intel MKL are installed correctly

@gjbex, @hajgato, @JensTimmerman: please review?
On Wed, Jul 2, 2014 at 4:58 PM, Jens Timmerman <notifications@github.com>
wrote:

> os.path.expanduser("~") is prefered over os.getenv('HOME')
>

Can you elaborate?
I have seen the opposite effect (situations where $HOME works, while `~`
does not; no proof at the moment)