Added public getter/setter for drop down position.

Fixed scaling of logo in action bar.
merge up
Merge branch 'monodroid-merge-422'

Conflicts:
	LegacyBar.Library/Bar/LegacyBar.cs
Added ability to set your own adapter for the drop down spinner.
Merge pull request #37 from jamesmontemagno/master

Fix logo padding & Implement Custom BaseAdapter for spinner