qbs files: Install 'qtcreator.sh' only for linux/macx

Change-Id: I052deda0248e00ada10204a677cf15fa0f7f964d
Reviewed-by: Joerg Bornemann <joerg.bornemann@nokia.com>

qtcreator.qbp

@@ -157,6 +157,7 @@ Project {
         ]
 
         Group {
+            condition: qbs.targetOS == "linux" || qbs.targetOS == "macx"
             files: "bin/qtcreator.sh"
             fileTags: "install"
             qbs.installDir: "bin"