Cleaned up non-standard characters
Added support for extruder offset handling

The extruder offset can be specified in the configuration
file or adjusted on the fly using the "M218 T# X# Y#" command.
The EEPROM support is not yet merged in.
The "T#" command can take option "F#" that specifies the feedrate
at which the printing head should be re-positioned. If not
specified the re-positioning move is not preformed immediately,
but the coordinates are adjusted for the printer to properly
position the head when the next movement happens.
Merge branch 'Marlin_v1' of github.com:ErikZalm/Marlin into jeff

Conflicts:
	Marlin/language.h
	Marlin/thermistortables.h
Merge pull request #383 from dob71/jeff

Hotend offset handling for multi-extruder machines