Windows build fix (skip checking files in /values* for test application).

I didn't tracked down where the issue comes from and whether this is expected behaviour (actually I doubt). But when building on Windows, the test trys to create a strings.xml in "values-mcc004-mnc4-en-rUS-ldrtl-sw100dp-w200dp-h300dp-xlarge-long-land-desk-night-xhdpi-finger-keyssoft-12key-navhidden-dpad". This exceeds the max length for file/directory names in Windows and therefore the build aborts.

Because this was currently the only issue that breaks building on Windows (when https://github.com/eyecatchup/Apktool/commit/073019fa541d17c16c6ca8e628f5e7a48285e639 is applied), this workaround should do the trick (for now).