[openFATE 306909] Implement kio_sftp with libssh

Feature added by: Andreas Schneider (gladiac) Feature #306909, revision 1 Title: Implement kio_sftp with libssh Hackweek IV: Unconfirmed Priority Requester: Important Requested by: Andreas Schneider (gladiac) Description: The current kio_sftp implementation calls the openssh ssh binary for sftp. This is ugly and slow. It is time to replace kio_sftp with libssh's sftp implementation. This is a POSIX like API for IO.   Andreas Schneider and Dirk Müller will work on this. Test Case: Whatever ... :) Use Case: Better, faster, cleaner! -- openSUSE Feature: https://features.opensuse.org/306909