This patch has `make install` calling out an install script, located in
a newly created `utils` direcctory. By delegating intallation to a
script, we become more flexible to check for error conditions.

Additionally, we also get rid of `DEST` in the makefile, and make
`PREFIX` a bit more flexible, by allowing us to specify alternative
locations where to install our files.

Signed-off-by: Joao Eduardo Luis <joao@suse.com>