winpr: add _WINRT platform detection macro
freerdp: add more settings for window panning and scaling
xfreerdp: add ParamChange event handler
freerdp: add new events for scaling and panning changes
Merge branch 'master' of git://github.com/awakecoding/FreeRDP

# By Marc-André Moreau
# Via Marc-André Moreau
* 'master' of git://github.com/awakecoding/FreeRDP:
  freerdp: add new events for scaling and panning changes
  xfreerdp: add ParamChange event handler
  freerdp: add more settings for window panning and scaling
  winpr: add _WINRT platform detection macro