This reverts commit 01541ee64c.

[default off for now]
syntax: M600  X[pos] Y[pos] Z[relative lift] E[initial retract] L[later retract distance for removal]

if enabled, after a M600, the printer will retract by E, lift by Z, move to XY, retract even more filament.
Oh, and it will display "remove filament" and beep like crazy.

You are then supposed to insert a new filament (other color, e.g.) and click the display to continue.
After having the nozzle cleaned manually, aided by the disabled e-steppers.
After clicking, the printer will then go back the whole shebang, and continue printing with a fancy new color.

Marlin v1, italian MSG_RESUMING and RepRapPro thermistor tables.

Panelolu pin assignment for sanguinololu

Add feature to briefly run the cooling fan at full speed when it first starts.

Finnish language

+ Finnish translation

Add a feature to run the cooling fan at full speed for a small period
(default 100ms) when first starting the fan.  Some fans wont reliably
start spinning at low power, and many fans have issue with the PWM at
low power.  However, once the fan starts spinning it can reliably be
set to a wide range of PWM values.

Always set the FAN PWM value in check_axes_activity() and always use
the value of the active move if a move is active.

Makefile sanguino

Fixes issues # 216 and # 135 for Gen6 and Gen6 Deluxe board

Power signal control definitions for other power supplies

Definitions for Sanguino SPI

Automatically set *_MIN_PIN and *_MAX_PIN according to *_HOME_DIR.

fixed  (#328) pwm generation at pin D12 and D13