windows: fixup `match` expression
windows: fixup `match` expression

fnmatch(3) defines backslashes as escape characters and places
special meaning on forward slashes.

When we invoke fnmatch, translate backslashes in a path to forward
slashes.

This should allow reasonably portable match expressions to be
authored and run independent of the underlying OS and file name
scheme.

amasad/watchman,kwlzn/watchman,twitter/watchman,windofthesky/watchman,sdgdsffdsfff/watchman,kevinsawicki/watchman,dhruvsinghal/watchman,yangeagle/watchman,yonglehou/watchman,hanhailong/watchman,wez/watchman,yonglehou/watchman,dhruvsinghal/watchman,amasad/watchman,yun63/watchman,webmasteraxe/watchman,montogeek/watchman,twitter/watchman,supriyantomaftuh/watchman,dcolascione/laptop-watchman,facebook/watchman,webmasteraxe/watchman,Jonekee/watchman,dcolascione/laptop-watchman,windofthesky/watchman,yonglehou/watchman,kevinsawicki/watchman,dcolascione/laptop-watchman,kwlzn/watchman,montogeek/watchman,facebook/watchman,nodakai/watchman,michalliu/watchman,kwlzn/watchman,montogeek/watchman,facebook/watchman,facebook/watchman,amasad/watchman,yonglehou/watchman,dhruvsinghal/watchman,besarthoxhaj/watchman,masoncloud/watchman,wez/watchman,twitter/watchman,Jonekee/watchman,bitemyapp/watchman,montogeek/watchman,besarthoxhaj/watchman,Jonekee/watchman,hanhailong/watchman,facebook/watchman,webmasteraxe/watchman,nodakai/watchman,yonglehou/watchman,bitemyapp/watchman,bitemyapp/watchman,yangeagle/watchman,sdgdsffdsfff/watchman,yonglehou/watchman,dhruvsinghal/watchman,dcolascione/laptop-watchman,besarthoxhaj/watchman,wez/watchman,masoncloud/watchman,michalliu/watchman,dcolascione/laptop-watchman,windofthesky/watchman,wez/watchman,sdgdsffdsfff/watchman,michalliu/watchman,kwlzn/watchman,webmasteraxe/watchman,windofthesky/watchman,yun63/watchman,yun63/watchman,windofthesky/watchman,amasad/watchman,supriyantomaftuh/watchman,sdgdsffdsfff/watchman,twitter/watchman,supriyantomaftuh/watchman,dhruvsinghal/watchman,twitter/watchman,dcolascione/laptop-watchman,dcolascione/laptop-watchman,windofthesky/watchman,webmasteraxe/watchman,yun63/watchman,Jonekee/watchman,bitemyapp/watchman,windofthesky/watchman,wez/watchman,yun63/watchman,bitemyapp/watchman,amasad/watchman,webmasteraxe/watchman,facebook/watchman,hanhailong/watchman,masoncloud/watchman,yangeagle/watchman,masoncloud/watchman,yonglehou/watchman,nodakai/watchman,facebook/watchman,nodakai/watchman,Jonekee/watchman,kevinsawicki/watchman,yangeagle/watchman,hanhailong/watchman,yangeagle/watchman,Jonekee/watchman,michalliu/watchman,facebook/watchman,nodakai/watchman,kevinsawicki/watchman,wez/watchman,michalliu/watchman,sdgdsffdsfff/watchman,nodakai/watchman,supriyantomaftuh/watchman,yangeagle/watchman,supriyantomaftuh/watchman,twitter/watchman,masoncloud/watchman,besarthoxhaj/watchman,masoncloud/watchman,twitter/watchman,nodakai/watchman,kevinsawicki/watchman,kwlzn/watchman,dhruvsinghal/watchman,besarthoxhaj/watchman,amasad/watchman,sdgdsffdsfff/watchman,masoncloud/watchman,montogeek/watchman,hanhailong/watchman,kwlzn/watchman,sdgdsffdsfff/watchman,masoncloud/watchman,supriyantomaftuh/watchman,besarthoxhaj/watchman,wez/watchman,michalliu/watchman,dhruvsinghal/watchman,hanhailong/watchman,wez/watchman,bitemyapp/watchman,yun63/watchman,facebook/watchman,kevinsawicki/watchman,montogeek/watchman,webmasteraxe/watchman,besarthoxhaj/watchman,kevinsawicki/watchman,yonglehou/watchman,yun63/watchman,wez/watchman,hanhailong/watchman,dhruvsinghal/watchman,supriyantomaftuh/watchman,yun63/watchman,hanhailong/watchman,bitemyapp/watchman,Jonekee/watchman,montogeek/watchman,supriyantomaftuh/watchman,amasad/watchman,webmasteraxe/watchman,michalliu/watchman,nodakai/watchman,nodakai/watchman,kwlzn/watchman,besarthoxhaj/watchman,Jonekee/watchman,yangeagle/watchman,montogeek/watchman,michalliu/watchman,sdgdsffdsfff/watchman,twitter/watchman,bitemyapp/watchman,amasad/watchman,dcolascione/laptop-watchman