Autotests: change to make tests run in-place

This change sets the path temporarily on win32 so that the testcases when
executed with "make check" find the necessary dll's in the main build directory.

tests/auto/qttest.pri

@@ -1,4 +1,5 @@
 include(../../qtcreator.pri)
+include(qttestrpath.pri)
 
 isEmpty(TEMPLATE):TEMPLATE=app
 CONFIG += qt warn_on console depend_includepath testcase qtestlib
@@ -11,7 +12,12 @@ symbian:{
     RSS_RULES ="group_name=\"QtTests\";"
 }
 
-include(qttestrpath.pri)
-
 # prefix test binary with tst_
 !contains(TARGET, ^tst_.*):TARGET = $$join(TARGET,,"tst_")
+
+win32 {
+    lib = $$IDE_LIBRARY_PATH;$$IDE_PLUGIN_PATH/Nokia
+    lib ~= s,/,\\,g
+    # the below gets added to later by testcase.prf
+    check.commands = cd . & set PATH=$$lib;%PATH%& cmd /c
+}