Bump TMV-CPP version to 0.72

Closes #782.
add gal-sim: a galaxy simulation toolbox.

GalSim is a package for simulating astronomical images of galaxies.
It was developed to support the upcoming "Great3" challenge,
http://great3challenge.info/, to test different methods for measuring
weak gravitational lensing, a key way of measuring mass in the
universe through its bending of light.

Closes #545.
Vigra: add cxx11 option, fix python site-packages install path

Closes #774.
Vcftools: updated to version 0.1.12a

Closes #784.
octave 3.8.1: optional GUI & JIT