fix debug/release library name mixup on mac/win

Task-number: QTBUG-30676
Change-Id: I5c5869ee3050e67390607f94054127bd62ab2ea4
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Liang Qi <liang.qi@digia.com>

tests/auto/qmldevtools/compile/compile.pro

 option(host_build)
 TARGET = tst_compile
-force_bootstrap: \
+force_bootstrap {
     QT = bootstrap-private
-else: \
+    !build_pass: CONFIG += release
+} else {
     QT = core
+    !build_pass:contains(QT_CONFIG, build_all): CONFIG += release
+}
 QT += qmldevtools-private
 macx:CONFIG -= app_bundle