Dependency parser implemented using Searn.
Makefile for dep parser
Dependency parser that can work on simple examples
TODO: feature engineering, fix a memory leak bug
quadratic and cubic features for dep parser
fix a memory leak bug
fix more memory leak bugs
- faster implementation of feature extraction
- fix a bug for initializing ezexample
- Rewrite the feature extraction for dep-parser
- TODO: Have memory bugs
rewriting searn
Add a  searn application : dependency parser
Merge remote-tracking branch 'upstream2/master'

Conflicts:
	vowpalwabbit/Makefile.am
	vowpalwabbit/searn.cc
fixing some memory bugs, rewrote neighbor features
ldf seems to be working
fixed bug with neighbor features and stride stuff
cleanup
Merge pull request #399 from arielf/master

utl/vw2csv: support negative labels too
changed hook to be generic for python and c++, added searn example to library
moved searn library to separate header, fixed some memory leaks
bug fixes
working on new search
Merge branch 'master' of github.com:hal3/vowpal_wabbit