Implementing attaching to IE using ShellWindows API

Fix for IEDriverServer reporing "Unexpected error launching Internet
Explorer. Could not get document from window handle." after running
many WebDriver jobs. Fixes issue #5342.

Signed-off-by: Jim Evans <james.h.evans.jr@gmail.com>
Adding IE option for ForceUseShellWindowsApi in .NET
Updating frames test to handle moved test page
Reverting change to defaultContent atom from change acf49c808ca9