title: Change hotkey for autocomplete selection
body: <p>In Eclipse, I find it pretty annoying that Enter is the hotkey that selects an item from the Content Assist/Autocomplete list.  Especially in PyDev where there is no end-of-line semicolon, pressing enter for a new line will instead give me whatever is selected in the Autocomplete list.</p>
  
  <p>Tab is a much better selection hotkey since I'm not likely to want a tab mid-line.</p>
  
  <p>Any chance of changing this in Eclipse?</p>
  
  <p>Using CDT, PDT, and PyDev, but interested in any solution related to Eclipse.</p>