title: Change target to x86 in VS2010
body: <p>I have a VS2010 solution with several projects in it. These projects are winforms apps and libraries.</p>
  
  <p>Now I MUST change platform for all projects to X86 from any CPU, but I can not do it, in some of my projects it stays 'Any CPU'. In these cases list contains only 'Any CPU'. It is impossible to change it.</p>
  
  <p>What could be the reason of it? How should I fix it?</p>
  
  <p>I read some wild solutions, e.g. open sln file in text editor and replace any cpu strings to X86 etc, but I hope there is a more straightforward and cleaner solution.</p>
  
  <p>Thanks!</p>
  
  <p>VS2010/.net4/c#</p>