Update build system to MM's new model

Signed-off-by: Luke Stuyvenberg <stuyvenberg@wisc.edu>
Fixed some imglib build issues

Fresh setups of the development environment don't have imglib1 in Fiji's
jar directory -- perhaps they once did, and it has since been removed? At
any rate, I've updated the plugin's usage of imglib to imglib2, changing
references where appropriate, and altered the build file to correctly find
them.

Mind, this build file won't work when we submit this for MM; bin_Win32
doesn't exist for them. In time these files will need to be moved into
classext, I suppose, or perhaps accessed via maven? (We could heavily
override the build script to do so, but that seems inelegant.)

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