- Update copyright to 2015
- Remove the non-standard "unmodified" from the 2-clause BSD license
- Remove scalable from the tagline to avoid misinterpretations
Move from one set of headers per major OS X release to one set of
headers per XNU release. Fetch the header files from Apple's official
Open Source site instead of GitHub in the fetchdeps developer target.
As a side effect, 10.6.x is now supported as well (untested), and proper
headers are used for 10.10.
Issue: #39
