- Update to 1.4.0
  - Added libssh2_session_supported_algs()
  - Added libssh2_session_banner_get()
  - Added libssh2_sftp_get_channel()
  - libssh2.h: bump the default window size to 256K
  - sftp-seek: clear EOF flag
  - userauth: provide more informations if ssh pub key extraction fails
  - ssh2_exec: skip error outputs for EAGAIN
  - LIBSSH2_SFTP_PACKET_MAXLEN: increase to 80000
  - knownhost_check(): don't dereference ext if NULL is passed
  - knownhost_add: avoid dereferencing uninitialized memory on error path
  - OpenSSL EVP: fix threaded use of structs
  - _libssh2_channel_read: react on errors from receive_window_adjust
  - sftp_read: cap the read ahead maximum amount
  - _libssh2_channel_read: fix non-blocking window adjusting 
- Add upstream patch fixing undefined function reference in libgcrypt backend
- BR: /usr/bin/man for test suite