decode username and password from url

[eeemarv]

#234

[naderman]

@eeemarv stof suggested you do this instead: #270 (comment)

[eeemarv]

Now using rawurldecode() and including host.

[naderman]

In summary, this PR fixes #234 #270 and #276

[eeemarv]

Sorry, I just noticed the naming of the commit is wrong. It should be "rawurlDECode() host, username and password" instead of "rawurlencode". In the code the right function is used though.

[eeemarv]

Note the query part is already urldecoded as the parse_str() function does this.

[naderman]

@fabpot I know you're focused on Mailer these days, but mind merging this? I think it's a somewhat common problem to run into on a current Symfony4 project, e.g. when following the docs on sending email with GMail https://symfony.com/doc/current/email.html#using-gmail-to-send-emails This will not currently work if a password contains non-ascii characters, even if they get encoded.

[fabpot]

Thank you @eeemarv.