"Fast" serial driver that fully overrides the Arduino-provided HardwareSerial/Serial* driver.

The receive side is basically a copy of the HardwareSerial driver, whilst the transmit side
uses the same algorithm as the APM_FastSerial driver.

See the example sketch for usage details.



git-svn-id: https://arducopter.googlecode.com/svn/trunk@276 f9c3cf11-9bcb-44bc-f272-b75c42450872