Code updates on PC Linux test versions.
Changed #include organization.
Fixed two menu issues.
Typo fixed.
Pulses defined as int again.
Softboard can output analog readings as sound on a piezzo.

If you do not want the analog2tone functionality
do not #define has_PIEZZO_SOUND
Menu::OutOfRange() does terminating linefeed.
Pulses example uses new softboard version.