rebar/rebar — pull request #131 by proger (2013-09-02 18:33:15+00:00)
Title: make rebar_log backends configurable

This allows to redirect output using user-specified functions
in the app config using `log_function` and `console_log_function`
variables.

For example:

```
{rebar, [
{log_function, {error_logger, info_msg}},
{console_log_function, {error_logger, info_msg}}
]}
```