master updated (7d7bd1b -> 453d30d)

[Basil L. Contovounesios]

blc pushed a change to branch master.

      from  7d7bd1b   ;Fix error in commit dcdf6d7124
       new  97d1f67   Various dbus.el cleanups (bug#41744)
       new  0185d76   Fix and extend format-spec (bug#41758)
       new  23a148c   Various battery.el improvements (bug#41808)
       new  453d30d   Improve battery.el UPower support


Summary of changes:
 doc/lispref/strings.texi       |  35 ++-
 etc/NEWS                       |  37 +++
 lisp/battery.el                | 675 +++++++++++++++++++++++------------------
 lisp/dired-aux.el              |  15 +-
 lisp/emacs-lisp/rx.el          |   2 +-
 lisp/erc/erc-match.el          |  19 +-
 lisp/erc/erc.el                |  21 +-
 lisp/format-spec.el            | 183 ++++++-----
 lisp/gnus/gnus-sieve.el        |  10 +-
 lisp/gnus/gssapi.el            |  11 +-
 lisp/gnus/mail-source.el       |  30 +-
 lisp/gnus/message.el           | 137 ++++-----
 lisp/image-dired.el            |   1 -
 lisp/net/dbus.el               | 271 +++++++----------
 lisp/net/eww.el                |   1 -
 lisp/net/imap.el               |  30 +-
 lisp/net/network-stream.el     |  13 +-
 lisp/obsolete/tls.el           |  16 +-
 lisp/textmodes/tex-mode.el     |   3 -
 test/lisp/battery-tests.el     | 106 ++++++-
 test/lisp/format-spec-tests.el | 135 ++++++++-
 test/lisp/net/dbus-tests.el    |   4 +-
 22 files changed, 1012 insertions(+), 743 deletions(-)