add universalchardet based on 43259182e1a0

http://hg.mozilla.org/mozilla-central/
migrate to use local copy of universalchardet
- fix compilation
Enable ISO-8859-2 and windows 1250 encoding detection

This might cause false detection in Latin-1, but worth testing.
Bump version - 1.3.0

- Use a local copy of UniversalDetector (based on 43259182e1a0 at http://hg.mozilla.org/mozilla-central/)
- Enabled Latin-2 detection in universal detector
replace all nullptr to nsnull
update podspec