f:apply implemented

Although the general concept was independently discovered, the finer details
of this implementation are motivated by the excellent, comprehensive work of
Dimitre Novatchev[0].

For those of us who either can't, or don't wish to, abaondon XSLT.

[0]: http://conferences.idealliance.org/extreme/html/2006/Novatchev01/EML2006Novatchev01.html
test/runner will now fail on non-fatal test errors
Basic README.md added
README.md licensed under the FDL 1.3
Docblocks for fgen:create-{func,tpl}
apply-gen now properly handles multiple functions
{xslink=>hoxsl} namespace corrections

Copy-paste exposed.
apply-gen application template priority for good measure

Depending on import/include order is a bad idea.
f:arity added for delayed functions
Delayed function nodes now wrapped in f:ref node

This primarily allows us to type check, but will also may it easy/performant
to query more complicated structures.
*.{out=>apply} for test case apply-gen output
test/runner properly fails on xspec non-zero exit