master updated (713bac4 -> 90a543e)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  713bac4   * lisp/so-long.el: Doc fix to reduce use of passive voice.
       new  a126c36   Test byte-compiler free variable warning
       new  90a543e   Decrease code duplication in byte-compiler free-vars 
warning


Summary of changes:
 lisp/emacs-lisp/bytecomp.el                        | 41 ++++++++++++----------
 .../bytecomp-resources/warn-free-setq.el           |  2 ++
 .../warn-free-variable-reference.el                |  4 +++
 test/lisp/emacs-lisp/bytecomp-tests.el             | 14 ++++++++
 4 files changed, 43 insertions(+), 18 deletions(-)
 create mode 100644 test/lisp/emacs-lisp/bytecomp-resources/warn-free-setq.el
 create mode 100644 
test/lisp/emacs-lisp/bytecomp-resources/warn-free-variable-reference.el