Fix CDB detection for Windows SDK 8.1

Change-Id: Ia39b736acb8ee9d35a6ee213265c780249271c49
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/libs/qtcreatorcdbext/cdb_detect.pri

@@ -15,7 +15,9 @@ win32-msvc*|winrt {
 #   The libraries are under 'ProgramFiles'as well, so, check for existence of 'inc'.
 #   32bit qmake:
     !exists($$CDB_PATH):CDB_PATH="$$(ProgramFiles)/Windows Kits/8.0/Debuggers"
+    !exists($$CDB_PATH):CDB_PATH="$$(ProgramFiles)/Windows Kits/8.1/Debuggers"
 #   64bit qmake:
     !exists($$CDB_PATH/inc):CDB_PATH="$$(ProgramFiles) (x86)/Windows Kits/8.0/Debuggers"
+    !exists($$CDB_PATH/inc):CDB_PATH="$$(ProgramFiles) (x86)/Windows Kits/8.1/Debuggers"
     !exists($$CDB_PATH/inc):CDB_PATH=""
 }