mozilla/r2d2b2g — pull request #447 by nickdesaulniers (2013-04-19 00:12:03+00:00)
Title: add make clean Issue #442

I did not try `perhaps also a make clean in the gaia/ subdirectory` because I don't know how to invoke make recursively. Is it as simple as:
```
cd gaia
make clean
cd -
```