do_auth is not merging request data

[sultaniman]

Hey,

I wondering why backend.strategy.request_data(merge=False) for do_auth call?

social-core/social_core/actions.py

Lines 12 to 14 in 9995648

	def do_auth(backend, redirect_name="next"):
	# Save any defined next value into session
	data = backend.strategy.request_data(merge=False)

For example real world applications might use forms POST requests and also in form action might supply query parameters and in this case merge=False for Django strategy will only take POST variables thus unintentionally breaking redirect part or other stages of authentication

<form action="login/facebook?next=/profile">
     {% csrf_token %}
    <button>Login</button>
</form>

Should there be a configuration option to merge POST and GET by default?

Thanks.