Update Windows XP results for fast/text/international/complex-character-based-fallback.html after r72173

The existing pixel results were XP-specific so I moved them into
LayoutTests/platform/win-xp.

* platform/win-xp/fast/text/international/complex-character-based-fallback-expected.checksum: Added.
* platform/win-xp/fast/text/international/complex-character-based-fallback-expected.png: Added.
* platform/win-xp/fast/text/international/complex-character-based-fallback-expected.txt:
* platform/win/fast/text/international/complex-character-based-fallback-expected.checksum: Removed.
* platform/win/fast/text/international/complex-character-based-fallback-expected.png: Removed.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@72569 268f45cc-cd09-0410-ab3c-d52691b4dbfc