Adding in clean copies of Servo library from Arduino 1.0.4
First attempt at refactoring of original servo code. Only adding servo support as a start to keep things simple.
Forgot to include reference to Servo in makefile
Merge pull request #482 from codexmas/Marlin_v1

servosupport
Merge branch 'marlin_upstream' into jmil_upstream
Merge branch 'jmil_upstream' into ChenBot

Conflicts:
	Marlin/Configuration.h