Fixed the outdated binaries generation pipeline

Now the first two tutorials for roslisp should work perfectly, especially the [Organizing Files](http://wiki.ros.org/roslisp/Tutorials/OrganizingFiles) one
In general if you consider renaming the macro you might also want to consider to:

* let the user pass the target name explicitly (from experience with many other functions it is usually a bad idea to hide that from the user)
* refactor the macro into a function (and set the only "global" variable `ROSLISP_EXECUTABLES` with parent scope)