hoe/test injects .gemtest into the spec.files, but rake-compiler tries
to invoke that as a task and doesn't find it. Presumably because
hoe/test injects the .gemtest file directly into the pkg/ directory and
rake-compiler assumes that the spec.files are available in the project
toplevel directory.
The goal is simplification and less duplication. Previous
defined task are commented and specific pieces are going to
be added to tasks folder.
This was requires since Echoe do not let us remove the compilation
steps that rake-compiler needs to hook in.