* fredrik/ssh/sftp-file-is-dir/OTP-6406:
  Removed unused code ssh.erl and changed tests
  Added eexist to return proper sftp parameter
  Changed erlclient testcases for sftp
  sftp ver6 mods, SSH_FX_CANNOT_DELETE added as parameter
  Updated doc for sftpd_vsn
  Changed testcases to proper sftpd listening
  changed option to sftpd_vsn
  corrected is_dir call in sftpd
  Changes to sftpd test suite
  Added a file_is_a_directory to a proper status return
  Basic functionality for sftp ver6 and testcase

Conflicts:
	lib/ssh/doc/src/ssh_sftpd.xml

* fredrik/ssh/rekeying:
  ssh_basic_SUITE rekey test modifications
  Modifications to idle_time testcase
  Added test for rekeying
  Added doc for rekey_limit option
  Renegotiating every hour and every gb sent, can be decreased with option {rekey_limit, integer()}

* fredrik/ssh/fix-idle-tests: (50 commits)
  Modifications to idle_time testcase
  Teach Win installer to handle redist on w2012/w8
  ssl: Receive port EXIT-message so that it does not get mixed up with the protocol-error message we are expecting
  ssl: Add and enhance tests
  ssl: Consider new server options when resuming a session
  Prepare release
  ssl: Add dependencies to Makefile
  Simplify the code for the generated info/0 function
  Don't try to work around a non-loadable NIF library
  Fix BER encoding when multiple levels of typedefs are used
  Update megaco documentation
  Update documentation for the asn1 application
  Fix other applications
  Fix use of asn1 in megaco
  Remove the unused asn1ct_gen_ber module
  Fix erroneous skipping for jinterface, erl_interface and ic
  kernel: Heart port needs to be unregistered
  Update preloaded modules
  Update primary bootstrap
  Update copyright years
  ...