title: Mono binary can't find DLLs in subdirectory
body: <p>I'm using Mono's mcs on Ubuntu. I have a Monogame program that has to locate the Monogame libraries in a subdirectory called "libs". It compiles fine, but when it comes to runtime it gives me an error saying it can't find it.</p>
  
  <blockquote>
    <p>Unhandled Exception:
    System.IO.FileNotFoundException: Could not load file or assembly 'MonoGame.Framework, Version=3.1.2.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
    File name: 'MonoGame.Framework, Version=3.1.2.0, Culture=neutral, PublicKeyToken=null'
    [ERROR] FATAL UNHANDLED EXCEPTION: System.IO.FileNotFoundException: Could not load file or assembly 'MonoGame.Framework, Version=3.1.2.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
    File name: 'MonoGame.Framework, Version=3.1.2.0, Culture=neutral, PublicKeyToken=null'</p>
  </blockquote>
  
  <p>My compiler flags are as follows:</p>
  
  <pre><code>mcs -r:libs/MonoGame.Framework.dll -target:winexe -out:main.exe *.cs
  </code></pre>
  
  <p>Not even a warning from the compiler, but it can't run. I've tried a lot of variations of these flags and I can't find an option to static compile (and I don't really want to).
  It runs fine when the libraries are in the same directory, but in a subdirectory it doesn't work. I've tried supposed solutions such as "AppDomain.CurrentDomain" and "Environment.SetEnvironmentVariable" but that didn't work and honestly it's a bad idea.</p>