Adds train locations to memories, and adds logix to fill those memory variables.
Creates the display grid of sensor and location points.
Extracts the location coordinates from the raw segments. Adds an index of the layout editor segments.
Adds jython commands to move the train icons.
Moves icn to dcc_128
Moves DECL_PIN to TivaDcc.hxx
Adds feedback key to the displayed railcom feedback data.
Adds tiva accessory board 3 to the build targets.