These include,SoftwareSerial.cpp
SoftwareSerial.h
These libraries are under GNU Lesser General Public License.
The Ameba GPS related APIs and examples are works based on Adafruit GPS library written by Limor Fried/Ladyada for Adafruit Industries (
http://www.adafruit.com/products/746).
These include,
Adafruit_GPS.cpp
Adafruit_GPS.h
These libraries are under BSD License.