Everything needed to make a Python variant of the Text example. The
Oxygen.ttf font file is the same as in MagnumPlugins/FreeTypeFont/Test
in the magnum-plugins repository.
That makes it much easier to handle in that case (because that's the
whole point of static builds) and also nicely circumvents any issues
with duplicated global data when a static lib would be linked to
multiple dynamic libraries.
Only the double ones, exposed as floats, because the extra ALU required
by doubles is negligible to function call overhead. It'll be different
for non-scalar types, but here I use this.