WebKit.xcworkspace "All Source" scheme always copies OS X WebKitSystemInterface libraries

WebKit.xcworkspace "All Source" scheme always copies OS X WebKitSystemInterface libraries
https://bugs.webkit.org/show_bug.cgi?id=155889

Reviewed by Alexey Proskuryakov.

Fixes an issue where building the "All Source" scheme in WebKit.xcworkspace would
always copy the OS X WebKitSystemInterface libraries regardless of the selected
base SDK. In particular, it would copy the OS X WebKitSystemInterface libraries
when building with SDK iphonesimulator. WebKit.xcworkspace should copy the SDK-
specific WebKitSystemInterface libraries.

* WebKit.xcworkspace/xcshareddata/xcschemes/All Source.xcscheme:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@198727 268f45cc-cd09-0410-ab3c-d52691b4dbfc