qibuild test perf: sall fixes for windows
qibuild test perf: sall fixes for windows

use file(TO_NATIVE_PATH) and add the .exe extension

Change-Id: I2064f5d52819ffb161148e9238e84e849419beda

aldebaran/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild