Add support for SPM - needs work

These configs need the spm easyblock in this PR: https://github.com/hpcugent/easybuild-easyblocks/pull/358 .

SPM is a MATLAB script, where the "performance-critical" parts have been compiled using the MATLAB-Compiler mcc. mcc needs a loaded GCC (4.4.x is supported, but it seems that 4.8.2. works fine).
This config/block uses the system GCC, which kinda sucks. What I would do is add MATLAB to the GCC toolchain (dummy right now) and solve the problem that way, but I am not sure if this is the right approach. Would be glad if someone who actually knows what they are doing could comment on this.

Stuff to do:
- Fix this dependency problem
- Do some testing (right now this builds and loads fine in MATLAB, but these are the only things I checked.)
- Fill in the right description