Add a test recipe for has_prefix_files
Only built the osx_is_app test recipe in OS X
Merge pull request #202 from asmeurer/tests

More test recipes
Add debug output to assert
Merge branch 'master' of github.com:conda/conda-build
add ability to have build/rpaths
use utils.relative throughout
simplfy how mk_relative is called
remove unused code
simplify code in while loop
add unittests
add more tests
fix case where library directory is prefix
add more tests
Merge pull request #210 from conda/rpath-ilan

Rpath ilan
cleanup
Run py.test on Travis CI
update changelog
Resolves merge conflicts in metadata.py