Cleaned up android dependencies in the 'Core' and 'Mavlink' project.
Make Mavlink and Core become pure Java projects
Add support for graddle build
updated generated classes output build path

Conflicts:
	Core/build.gradle

eclipse update to fix dependency issues created by setting 'Core' and
'Mavlink' as regular java projects.

Conflicts:
	Android/project.properties
updated android libraries list.