#1 heavy fails to build on Linux for filename-case reasons

[Steeljack]

Right now, heavy doesn't build on Linux because the file

controller/makingthings/analogin.c

refers to AnalogIn.h, but the file on disk is named analogin.h.

(This works on MacOS X, because the MacOS filesystem is case-preserving but case-insensitive.)

I'll be uploading a patch to fix this momentarily.