title: Letter "y" comes after "i" when sorting alphabetically
body: <p>When using function <code>sort(x)</code>, where <code>x</code> is a character, the letter "y" jumps into the middle, right after letter "i":</p>
  
  <pre><code>&gt; letters
  [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t"
  [21] "u" "v" "w" "x" "y" "z"
  
  &gt; sort(letters)
  [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "y" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s"
  [21] "t" "u" "v" "w" "x" "z"
  </code></pre>
  
  <p>The reason may be that I am located in Lithuania, and this is "lithuanian-like" sorting of letters, but I need normal sorting. How do I change the sorting method back to normal inside R code?</p>
  
  <p>I'm using R 2.15.2 on Win7.</p>