title: How does Copy-local work? log4net.dll is not being copied to MyProject output directory
body: <p>I am wondering what copy-local=true for references exactly does. Does it copy the referenced assembly along with all of its dependencies to the output directory?</p>
  
  <p>My scenario is the following:
  I have a custom log wrapper that utilizes log4net. I build a release assembly of MyLogWrapper.dll with log4net.dll reference set to copy-local true. Referencing MyLogWrapper.dll from MyProject with copy local set to true should result in log4net.dll being copied as well right? I am only referencing MyLogWrapper.dll and none of its dependencies in MyProject. log4net.dll is not being copied to MyProject output directory but all other dependencies of MyLogWrapper are. What could be the problem?</p>
  
  <p>I have made some more experiments and it seems that if I remove the assembly (log4net.dll) from GAC it starts to get copied locally. Can anyone confirm that this is the problem?</p>