Adding a software definition for libossp-uuid

See http://www.ossp.org/pkg/lib/uuid/

This is notably useful to be able to build pgSQL with the uuid-ossp module
(http://www.postgresql.org/docs/9.1/static/uuid-ossp.html)
All of these should just have `:env => env` (or `env: env` without the ruby 1.8 hashrockets)

The "API" for building on the command line is to setup your environment variables and then run `./configure; make; make install` like so:

```bash
export CFLAGS='yadda yadda'
export LDFLAGS='yadda yadda'
./configure
make
make install
```

Running make and make install *MUST* work with the same args you gave configure.  It *MIGHT* work with different args than you gave configure, but there's no good reason to go there.