Fix QLibrary autotest for Windows

The libraries were built into wrong directory in Windows. Fixed it so
that the libraries are built into debug and release directories like
the test executable.

Also fixed QMAKE_CLEAN statement, which was using incorrect separator.

Task-number: QTBUG-24151
Change-Id: Iade656af5f83ef2b79c2b9c4177df4a16b2f6821
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

tests/auto/corelib/plugin/qlibrary/lib/lib.pro

@@ -13,3 +13,11 @@ win32-borland: DEFINES += WIN32_BORLAND
 # This project is testdata for tst_qlibrary
 target.path = $$[QT_INSTALL_TESTS]/tst_qlibrary
 INSTALLS += target
+
+win32 {
+    CONFIG(debug, debug|release) {
+        DESTDIR = ../debug/
+    } else {
+        DESTDIR = ../release/
+    }
+}

tests/auto/corelib/plugin/qlibrary/lib2/lib2.pro

@@ -15,13 +15,20 @@ win32-borland: DEFINES += WIN32_BORLAND
 # We want to test if we can load a shared library with *any* filename...
 
 win32 {
+    CONFIG(debug, debug|release) {
+        BUILD_FOLDER = debug
+    } else {
+        BUILD_FOLDER = release
+    }
+    DESTDIR = ../$$BUILD_FOLDER/
+
     # vcproj and Makefile generators refer to target differently
     contains(TEMPLATE,vc.*) {
         src = $(TargetPath)
     } else {
         src = $(DESTDIR_TARGET)
     }
-    files = mylib.dl2 system.qt.test.mylib.dll
+    files = $$BUILD_FOLDER$${QMAKE_DIR_SEP}mylib.dl2 $$BUILD_FOLDER$${QMAKE_DIR_SEP}system.qt.test.mylib.dll
 } else {
     src = $(DESTDIR)$(TARGET)
     files = libmylib.so2 system.qt.test.mylib.so
@@ -34,7 +41,7 @@ renamed_target.path = $$target.path
 for(file, files) {
     QMAKE_POST_LINK += $$QMAKE_COPY $$src ..$$QMAKE_DIR_SEP$$file &&
     renamed_target.extra += $$QMAKE_COPY $$src $(INSTALL_ROOT)$${target.path}$$QMAKE_DIR_SEP$$file &&
-    CLEAN_FILES += ../$$file
+    CLEAN_FILES += ..$$QMAKE_DIR_SEP$$file
 }
 renamed_target.extra = $$member(renamed_target.extra, 0, -2)
 QMAKE_POST_LINK = $$member(QMAKE_POST_LINK, 0, -2)

tests/auto/corelib/plugin/qlibrary/tst/tst.pro

@@ -13,5 +13,3 @@ win32 {
 }
 
 TESTDATA += ../library_path/invalid.so
-
-win32:CONFIG += insignificant_test # QTBUG-24151