master updated (f804248 -> 89c3134)

[Mattias Engdegård]

mattiase pushed a change to branch master.

      from  f804248   Tweak a failing custom test
       new  c69b476   Don't mutate string literal
       new  e1ed0c3   Fix xref {prev,next}-error target buffer match 
highlighting extent
       new  89c3134   Use C-mouse-1 for context menu on NS


Summary of changes:
 lisp/mouse.el             | 45 +++++++++++++++++++++++++++++----------------
 lisp/obsolete/terminal.el |  7 +++----
 lisp/progmodes/xref.el    |  3 ++-
 3 files changed, 34 insertions(+), 21 deletions(-)