In my git config I don't store my user.name and user.email in my _/.gitconfig but instead in a /.git_local.conf which is included from my ~/.gitconfig

Per the Git documentation:

--[no-]includes
   Respect include.* directives in config files when looking up values.
   Defaults to off when a specific file is given (e.g., using --file,
   --global, etc) and on when searching all config files.

This means that every time I build it it attempts to force me to be the BuildTool user! That's annoying!

This change simply allows includes without detrimental effects the current use.

The attached patch will implement the --includes.