Merge pull request #408 from hal3/master

updated search library, added ipython notebook, more examples
fix bit confusion segfault
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit
removed spurious print
removed wap.cc
fixed svm tests to not overwrite reference files
fixed hang on multiple pass to sender.cc bug
added some preliminary eval stuff
remove reference for wap.h
added arbitrary policy evaluation to CB algs
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit
remove wap from windows build
Merge branch 'master' of git://github.com/JohnLangford/vowpal_wabbit