basho/rebar — pull request #370 by zinid (2013-06-30 16:18:18+00:00)
Title: Speed up the compilation procedure

1) Maintain modules relationships in a graph.
2) Make it possible to store the graph as ebin/.rebar.build.info.
This significantly speeds up a compilation process of large projects.
The feature is enabled by setting 'keep_build_info' to 'true'.
The default is 'false'.