Localized assemblies aren't copy on build

[fpellet]

Description

With nuget, if you add package with localized assemblies, then nuget copy localized assemblies on build.
Nuget add MsBuild task to copy this references.

Repro steps

Create project MyProject
paket.exe add nuget EntityFramework.fr project MyProject
Build MyProject

Expected behavior

Build output contains "fr" directory with localized assemblies

Actual behavior

Build output not contains "fr" directory

Known workarounds

Edit csproj and add as content :(

[forki]

marked as up-for-grabs

[dedale]

With Nuget, installation of localized package automatically copies its assemblies in the core package (eg. from packages\EntityFramework.fr.6.1.3\lib\net45\fr to packages\EntityFramework.6.1.3\lib\net45\fr)