common: Fix typos
common: Add support for BlueZ 5 D-Bus API
common: Handle Write Extended Inquiry Response as stateful packet

EIR data is ignored for now.
common: Modify parameters for Write LE Host Supported

This matches the current BlueZ/kernel.
common: Ignore AD for LE Set Advertising Data

This makes the state machine more robust.
common: Add minimal LE support

This is required for newer BlueZ/kernel.
common: Modify Inquiry "length" parameter

Newer BlueZ uses 5.12s (0x04).
Add new sdp_crash.py test
common: Allow different Create Connection parameters

These parameters are used when connecting to a device which was seen
before, but its EIR data is "expired" on the kernel cache.
common: Simplify handling of existing devices

There is no need to remove an existing device, as it will be created
anyway during discovery.
Add payload for an alternative SDP crash