Fix building treeviewfind test.

Change-Id: If4211acb37cb3c87a901ebf3da030bd1da3cf99c
Reviewed-by: Aurindam Jana <aurindam.jana@digia.com>
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

tests/auto/treeviewfind/treeviewfind.pro

+QTC_PLUGIN_DEPENDS += find
 include(../qttest.pri)
 
-include($$IDE_SOURCE_TREE/src/plugins/find/find.pri)
-
-LIBS *= -L$$IDE_LIBRARY_PATH/QtProject
+LIBS *= -L$$IDE_PLUGIN_PATH/QtProject
 
 SOURCES += \
     tst_treeviewfind.cpp