The [un]install make goals have a rather fixed meaning for *ix users. The simple
symlinks provided here don't match the expectations users have from [un]install.
Therefore it is appropriate to rename them to "something" not tied to specific
expectations.
Maybe I'm naive but even after thinking about it for quite
some time I can't see why it should hurt to just build the
cc65 binaries from the sources "in place" and have 'make
install' simply create some symlinks in usr/local/bin.
The new Makfile builds the binaries with builtin search paths
matching their build location. So the symlinks in usr/local/bin
allow to allow to use them out-of-the-box without additional
environment variables.