Ugens: Add FSinOsc. Optimize delay and white-noise.
Ugens: asr and fix delay.
Utils: add fn-c

convenience function to emulate closure-free music languages
Ugens: re-add white noise. fix sin-osc-c.
Utils: fix loading by :use'ing clojure.walk (needed by fn-c)
Ugens/delay: use java.nio buffer instead of java array (slightly faster).
DSP: pack constant-play in deftype for better performance
Add speech synthesis

- add MARY client code to use a MARY server to render speech
- add examples to example
- Patterns: send strings to freq argument of default synth