debian packager would like to replace vendored libs with system provided ones
(using symlinks). This requires "follow_symlinks=True".
discussion of security implications: https://serverfault.com/q/244592
to minimise attack surface, we only set this option for the "vendor/" directory.
related: https://github.com/spesmilo/electrum/issues/8023
* add invoice status to invoice_status callback
* debug statement fails tests
* removed commented lines, added progress/attempt counter comment in lnworker.pay_to_node,
and update the invoice_status event handler in qeinvoicelistmodel.py
'last' property on WizardComponents is now queried from UI, not from the wizard.
This allows the content of the WizardComponent itself to be taken into account.
```
Traceback (most recent call last):
File "kivy/_clock.pyx", line 645, in kivy._clock.CyClockBase._process_events
File "kivy/_clock.pyx", line 218, in kivy._clock.ClockEvent.tick
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/uix/dialogs/password_dialog.py", line 227, in <lambda>
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/uix/dialogs/password_dialog.py", line 333, in <lambda>
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/main_window.py", line 721, in on_open_wallet
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/main_window.py", line 687, in on_wizard_success
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/util.py", line 445, in <lambda>
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/util.py", line 441, in do_profile
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/main_window.py", line 940, in load_wallet
File "/home/user/wspace/electrum/.buildozer_kivy/android/app/electrum/gui/kivy/main_window.py", line 950, in request_focus_for_main_view
File "jnius/jnius_export_class.pxi", line 844, in jnius.jnius.JavaMethod.__call__
jnius.jnius.JavaException: Cannot call instance method b'requestFocusForMainView' on class b'org/kivy/android/PythonActivity'
```
If enabled, we log to stderr, which can get inspected via logcat.
Not user-friendly at all - but previously there was no way to get logs from a release build.
closes https://github.com/spesmilo/electrum/issues/7409