use precompiled library

[shimon1024]

cf.

• https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5:-Library-specification#libraryproperties-file-format
• Changed linking order, so precompiled libraries can use the Arduino c… arduino/ArduinoCore-avr#52

[shimon1024]

We should use build properties instead of precompiled libraries.