Migrate from numpy.distutils to meson

[vnmanoharan]

numpy.distutils, which we use to build the Fortran extensions and handle packaging, is now deprecated. SciPy is now using meson and we should probably do the same.

Useful background:

• The basics of python packaging in early 2003
• Moving SciPy to the meson build system
• Numpy guide to using f2py and automating wrapper generation

[vnmanoharan]

meson build is now in develop (see #434) and is working on Linux and Windows. Needs to be tested on other platforms.