asyncproc: use windows hack only in python < 2.7
asyncproc: use windows hack only in python < 2.7

robotframework/RIDE,HelioGuilherme66/RIDE,robotframework/RIDE,fingeronthebutton/RIDE,fingeronthebutton/RIDE,robotframework/RIDE,caio2k/RIDE,caio2k/RIDE,robotframework/RIDE,HelioGuilherme66/RIDE,fingeronthebutton/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,caio2k/RIDE