Introduce a new 'raw' option for dependency specs in rebar.config file.
For example:
{deps,
{dependency_name, "1.0.*",
{git, "<...>", {branch, "master"}},
[raw]
}
]}.
When this option is specified, rebar does not require the dependency to
have a standard Erlang/OTP layout which assumes presence of either
"src/dependency_name.app.src" or "ebin/dependency_name.app" files.
'raw' dependencies can still contain 'rebar.config' and even can have
the proper OTP directory layout, but they won't be compiled.
Only a subset of rebar commands will be executed on the 'raw'
subdirectories:
get-deps, update-deps, check-deps, list-deps and delete-deps.
Anton Lavrik
0b833391ed