Issue #83 is not totally fixed. Using platform-generic libraries (under SKETCHES/libraries/) from 3rd-party boards does not work. Libraries cannot be found by the builder.
I tested the SWAP library:
https://github.com/panStamp/swap
with this example:
https://github.com/panStamp/swap/tree/master/examples/binouts
for panStamp NRG2 board:
http://panstamp.org/arduino/package_panstamp_index.json