Unicode/Utf8 filenames

[dekz]

Support utf8value file names which is also compatible with ascii.

Fixed:

sagan dekz$ node node_modules/taglib/examples/simple.js ~/Projects/node-taglib/examples/ここには何もかもがあるし、何もかもがない.mp3 
TagLib: Could not open file /Users/dekz/Projects/node-taglib/examples/SSkoU?K?K?B?WU?K?K?jD.mp3

node.js:189
        throw e; // process.nextTick error, or 'error' event on first tick
        ^
Error while reading data from /Users/dekz/Projects/node-taglib/examples/SSkoU?K?K?B?WU?K?K?jD.mp3

Reading in the data is fine though:

DEBUG: { genre: '',
  artist: 'Toe',
  album: 'For Long Tomorrow',
  year: 2009,
  title: 'ここには何もかもがあるし、何もかもがない',
  track: 1 }

[nikhilm]

This has been merged - 57fb80c
Thanks a lot!