This patch adds two new static methods to HttpRequest.
get_http_basic_authentication_header generates a "Authorization" header
from a given URL, where as parse_http_basic_authentication_header parses
an "Authorization" header into username and password.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *