Overrides

Chariot provides a method to override source recipes with a local source. This is done by creating a .chariot-overrides file in the same directory as the root chariot config. Each line in this file represents one override in the format of <source recipe name>: <path to local source>.

```
gcc: ../gcc-source
binutils: ../binutils-source
```

The goal of overrides is to provide a convenient way to develop/modify sources without having to modify the recipe. It is recommended to gitignore or otherwise make sure the .chariot-overrides file is not published to version control.