Fixed bug in detection of "natural" orientation of Android device.

Value of "natural" orientation is computed on first OnOrientationChanged() call (not in ctor, because it may return invalid value if called too early).
Orientation listener is active between Activity.OnResume()/OnPause() calls.
Orientation value of OrientationUnknown (-1) is ignored.
Merge branch 'develop' into UndoRedo
XmlImporter was failing on all array types.
Note that the same sortof fix needs to be done to deal with generics.
Importing a contentproj would miss copy items which were set as "None" build action or if the CopyToOutputDirectory property was missing.
Merge pull request #2689 from SickheadGames/XmlImportArrayFix

XmlImporter was failing on all array types.
Merge pull request #2690 from SickheadGames/ProjectImportNoneAction

Fix to PipelineTool contentproj import.
Remove unused parts of AndroidCompatibility
Merge pull request #2658 from Andreyul/orientation

Fixed bug in detection of "natural" orientation of Android device.
Merge pull request #2692 from danzel/tidy-android-compatibility

Remove unused parts of AndroidCompatibility
Fix for wrong line endings in pipeline tool output
Merge pull request #2693 from SickheadGames/PipelineToolNewLineFix

Fix for wrong line endings in pipeline tool output
Merge branch 'develop' into UndoRedo
Fixing 'New Project'.
Fixed crazy naming of click handlers.
Merge branch 'NewProjectFix' into UndoRedo
Merge pull request #2695 from SickheadGames/NewProjectFix

Fixing PipelineTool File > 'New Project'
Unified 'Selection' (IController.Selection).
This is in preparation for multi-item property editing.
Note: Technically it already sets PropertyGrid.SelectedItems to the multi-item selection, but its useless because Processor and Importer properties are not recognized as the same between items (even when they are).
Don't need to set the sound effect here.
Handle cases where not enough sound instances were available.
The sound effect was already nulled when added to the pool.
We now initialize both playing and pooled arrays.
Removed unnessasary platform specific behavior.