Merge pull request #34 from tqchen/unity

Unity
Merge pull request #35 from tqchen/unity

ok
Merge pull request #36 from tqchen/unity

add acknowledgement
Merge pull request #37 from tqchen/unity

Unity
Merge pull request #38 from tqchen/unity

Unity
Merge pull request #39 from tqchen/unity

fix mac compile issue
Merge pull request #41 from tqchen/unity

Unity
Merge pull request #42 from tqchen/unity

Unity this is final minor change in data structure
Merge pull request #43 from tqchen/unity

add changes that are not commited
clean up warnings from msvc
changes
:Merge branch 'unity'

Conflicts:
	src/gbm/gbtree-inl.hpp
	src/learner/evaluation-inl.hpp
	src/tree/param.h
Merge branch 'master' into unity