Merge Jef's upstream changes:
- some stream IO abstraction updates: poll() support, but also a new
ioctl() interface to query the BLE name of the stream instead of our
own 'get_name()' function.
This will require corresponding changes on the subsurface side.
- Jef merged the Oceanic BLE support from me, with changes, and some
general atom2 backend cleanups.
- misc small fixups like the 3s Mares BLE timeout we already had.
* git://github.com/libdivecomputer/libdivecomputer:
Install the ioctl header file
Advertise the BLE support in the device descriptors
Fix the BLE device detection for the i770R and Pro Plus X
Implement the BLE handshaking
Implement the BLE packet sending and receiving
Read the entire data packet in a single operation
Remove the trailing zero byte from all commands
Fix a bug in the ACK/NAK handling
Remove an unnecessary function
Add an ioctl to retrieve the remote device name
Re-implement the set_latency function as an ioctl
Add an ioctl function to the I/O interface
Integrate the new poll function
Add a poll function to the I/O interface
Add support for the Oceanic Veo 4.0
Increase the timeout to 3 seconds
f2f775b9aa