- adopt new ${opt}_ARGS for USE and DEPENDS
- small cleanup and restructure
- add LICENSE
- no version bump [1]

[1] A new apr-util release is in the pipe and with
    this commit the next changes are more transparent.

with hat apache@


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@368634 35697150-7ecd-e111-bb59-0022644237b5