title: MSBuild - how to copy files that may or may not exist?
body: <p>I have a situation where I need to copy a few specific files in a MSBuild script, but they may or may not exist. If they don't exist it's fine, I don't need them then. But the standard <code>&lt;copy&gt;</code> task throws an error if it cannot find each and every item in the list...</p>