WIP: New build scripts

With the paradigm for building changing away from compiling MM ourselves,
and using the new setup script that now has a lonely, abandoned commit
floating around, I've started work on these new build scripts.

build-do-setup.sh is the main constituent, containing most of what was in
setup.sh; this does the work of fetching an MM nightly if there isn't one
installed and putting it nearby.

build-ant.sh and build-maven.sh use ant or maven respectively to build
SPIMAcquisition. Maven is preferred and default (see build-new.sh, the
parent script).

build-fragments.sh is just a function library. Pay no attention to the
script behind the curtain.

Signed-off-by: Luke Stuyvenberg <stuyvenberg@wisc.edu>