Clean Windows build fails after r110033

Clean Windows build fails after r110033
https://bugs.webkit.org/show_bug.cgi?id=80553

Rubber-stamped by Jon Honeycutt and Eric Seidel.

Source/JavaScriptCore:

* JavaScriptCore.vcproj/JavaScriptCore/copy-files.cmd:
Place the implementation files next to their header files in the wtf/text subdirectory.
Use echo -F to tell xcopy that these are files (since there is apparently no flag).
* JavaScriptCore.vcproj/jsc/jsc.vcproj:
Update the path to those implementation files.
* JavaScriptCore.vcproj/testRegExp/testRegExp.vcproj:
Ditto.

Source/ThirdParty:

* gtest/msvc/gtest-md.vcproj:
Add the new JavaScriptCore include directory to the include path.

Source/WebCore:

* WebCore.vcproj/WebCore.vcproj:
Update the expected location of the copied JSC WTF string implementation files.

Tools:

Add the new JavaScriptCore include directory to some more vsprops files.

* DumpRenderTree/win/ImageDiffCommon.vsprops:
* WebKitTestRunner/Configurations/InjectedBundleCommon.vsprops:
* WebKitTestRunner/Configurations/WebKitTestRunnerCommon.vsprops:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@110133 268f45cc-cd09-0410-ab3c-d52691b4dbfc