mail_user_get_by_login() for remoting API
I'm working on Vacation support for Ingo/Horde, see https://github.com/horde/horde/pull/20
It works, but requires a SOAP and a MySQL connection. I'd like it to not require the parallel MySQL connection, because it is not elegant and it is only required to the the "mailuser.primary_id" from his e-mail address.
So I implement a new remoting API function, mail_user_get_by_login().
I have a patch against svn://svn.ispconfig.org/ispconfig3, revision 3682:
I don't put it into this task, because it might be mangled.