master updated (ace6eba -> 1a3aa60)

[Michael Albinus]

albinus pushed a change to branch master.

      from  ace6eba   Fix byte-compiler warning for failed uses of lexical vars
       new  3d712d5   * etc/NEWS: Add user option 'tramp-debug-to-file'.
       new  ba692b7   Allow Tramp to mirror traces to a file
       new  1a3aa60   Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs 
into master


Summary of changes:
 doc/misc/tramp.texi      |  15 ++++++
 etc/NEWS                 |  16 +++++--
 lisp/net/tramp-adb.el    |   6 +--
 lisp/net/tramp-cmds.el   |   3 +-
 lisp/net/tramp-compat.el |   7 +++
 lisp/net/tramp-gvfs.el   |  10 ++--
 lisp/net/tramp-sh.el     |  22 ++++-----
 lisp/net/tramp-smb.el    |  14 +++---
 lisp/net/tramp.el        | 118 ++++++++++++++++++++++++++++-------------------
 9 files changed, 130 insertions(+), 81 deletions(-)