Sort WebCore Xcode project file

* WebCore.xcodeproj/project.pbxproj:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141758 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Remove duplicate entry from WebCore Xcode project

    $ uniq Source/WebCore/WebCore.xcodeproj/project.pbxproj | diff -u - Source/WebCore/WebCore.xcodeproj/project.pbxproj | patch -p0 -R
    patching file Source/WebCore/WebCore.xcodeproj/project.pbxproj

* WebCore.xcodeproj/project.pbxproj: Remove duplicate.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141759 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Sort WebKit2 Xcode project file

* WebKit2.xcodeproj/project.pbxproj:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141760 268f45cc-cd09-0410-ab3c-d52691b4dbfc