[boost] Using lexertl instead of spirit

In answer to Paul Giaccone, The main selling point of lexertl as far as boost goes is probably speed. lexertl lexers are both fast to construct (typically under 100 milliseconds on a modern machine) and fast to tokenise input (the generated state machine uses the flex technique of equivalence classes). I personally like the fact that you can dump the DFA as data and process it later with any language you like too. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.