Fix logic for enabling features based on renamed dependencies

[duxovni]

When enableFeatures inspects optional dependencies to enable additional features in accordance with https://doc.rust-lang.org/nightly/cargo/reference/features.html#dependency-features , it can incorrectly enable features for the original names of renamed dependencies, and fail to enable features for the new names. For example, diesel has a feature "uuid" which adds uuid < 0.7.0 as a dependency, and a separate feature "uuidv07" which adds uuid >= 0.7.0 renamed as uuidv07. When the "uuidv07" feature is enabled, enableFeatures sees that one of the features enables the dependency uuid, so it also enables the "uuid" feature. However, the relevant dependency was renamed, and the non-renamed uuid < 0.7.0 required by the "uuid" feature isn't present among the dependencies, so the build breaks. This patch fixes enableFeatures and doesFeatureEnableDependency to correctly handle renamed dependencies.

[Ericson2314]

Thanks for this!

[Ericson2314]

I tested this by hand, thanks!