stage_poly:: default sched_exponent should be 1.0
stage_poly:  oopsie in cli params
stage_poly: tests (DON'T BREAK THE FUTURE)
stage_poly: tests & tweakage for multipass
Merge pull request #326 from arielf/master

This should hopefully fix the Mac OS-X link failures
1) add entity relation task solved by searn
2) make history_info, add_history_to_example, and remove_history_to_example
public, so that users can define their own history features.
Fix a bug in passing parameters
report which node we are waiting for
Updated DLL interface
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit
Merge pull request #327 from KaiWeiChang/master

A new task for Searn: jointly recognizing entity and relation types
Merge pull request #328 from petricek/spantree_debug

spanning_tree: report which node we are still waiting for
Add a demo on entity-relation task
stage_poly: test setup tweak
stage_poly: tweak batch size command line
stage_poly: test tweakage
Merge pull request #329 from KaiWeiChang/master

Add a demo on entity-relation task
Merge pull request #325 from wfenchel/master

minor updates to stage_poly
make windows compile work
tweaks to C# example