master updated (a33bf01149 -> 4fb028be6c)

[Po Lu]

oldosfan pushed a change to branch master.

      from  a33bf01149 Prevent cursors from being set on tooltip frames on Haiku
       new  bc44455f77 Implement double buffering on MS Windows
       new  402c90c912 Fix palette freeing on MS Windows with double buffering
       new  4fb028be6c Fix releasing the mouse on top of the tool bar on MS 
Windows


Summary of changes:
 etc/NEWS      |   7 +++
 src/w32fns.c  |  33 ++++++++++-
 src/w32term.c | 173 ++++++++++++++++++++++++++++++++++++++++------------------
 src/w32term.h |  22 ++++++++
 src/w32xfns.c |  76 ++++++++++++++++++++++----
 5 files changed, 245 insertions(+), 66 deletions(-)