Merge branch 'master' of git://github.com/JohnLangford/vowpal_wabbit
Merge pull request #135 from eHarmony/truely_readable

Truly readable model
fixed initialization bug and holdout_off required by test
Merge branch 'master' of git://github.com/JohnLangford/vowpal_wabbit
ariel: rewrite + refactor + bug-fix Paul Mineiro's hypersearch for general usage.
utl/vw-hypersearch: if no progress assertion is met, terminate more gracefully.
utl/vw-hypersearch: neater print at flat-line condition
Merge pull request #140 from arielf/master

Paul Mineiro's hypersearch for general usage + enhancements + bug fix
update build to use zlib-1.2.8
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit
support invert_hash for multiclass problem