Fixed qlocale unittest to install subprogram syslocaleapp correctly

- It was trying to install syslocaleapp sub program as TESTDATA
  instead of an application.

Change-Id: I2117d11335bc2fd37a8ccc9a03b0337382f0177f
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

tests/auto/corelib/tools/qlocale/syslocaleapp/syslocaleapp.pro

@@ -6,6 +6,3 @@ CONFIG -= app_bundle
 
 QT = core
 
-# This app is testdata for tst_qlocale
-target.path = $$[QT_INSTALL_TESTS]/tst_qlocale/$$TARGET
-INSTALLS += target

tests/auto/corelib/tools/qlocale/test/test.pro

@@ -12,6 +12,8 @@ win32 {
         TARGET = ../../release/tst_qlocale
     }
 }
-TESTDATA += syslocaleapp
+
+load(testcase) # for target.path and installTestHelperApp()
+installTestHelperApp("../syslocaleapp/syslocaleapp",syslocaleapp,syslocaleapp)
 
 mac: CONFIG += insignificant_test # QTBUG-22769