title: eclipse magic: ... Syntax error, varargs are only available if source level is 1.5 or greater
body: <p>Yesterday I made a project in eclipse, and it was working, compiling. I used Eclipse Galileo for Java EE. Today I open eclipse and see lots of errors saying that stuff is not available and that it is only available if source level is 1.5.</p>
  
  <p>What to do?</p>