[C2hs] patch applied (c2hs): Allow ' \e' escape char in string and char literals

[Duncan Coutts]

Sun Mar 25 06:04:43 PDT 2007  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * Allow '\e' escape char in string and char literals
  This is a GNU C extension.

    M ./c2hs/c/CLexer.x -1 +2