BUG: QT_DEFINITIONS should not be quoted. This addresses bug#2481.

Modules/FindQt3.cmake

@@ -217,7 +217,7 @@ IF(QT_FOUND)
   IF (WIN32 AND NOT CYGWIN)
     IF (QT_QTMAIN_LIBRARY)
       # for version 3
-      SET (QT_DEFINITIONS "-DQT_DLL -DQT_THREAD_SUPPORT -DNO_DEBUG")
+      SET (QT_DEFINITIONS -DQT_DLL -DQT_THREAD_SUPPORT -DNO_DEBUG)
       SET (QT_LIBRARIES imm32.lib ${QT_QT_LIBRARY} ${QT_QTMAIN_LIBRARY} )
       SET (QT_LIBRARIES ${QT_LIBRARIES} winmm wsock32)
     ELSE (QT_QTMAIN_LIBRARY)
@@ -227,7 +227,7 @@ IF(QT_FOUND)
   ELSE (WIN32 AND NOT CYGWIN)
     SET (QT_LIBRARIES ${QT_QT_LIBRARY} )
     
-    SET (QT_DEFINITIONS "-DQT_SHARED -DQT_NO_DEBUG")
+    SET (QT_DEFINITIONS -DQT_SHARED -DQT_NO_DEBUG)
     IF(QT_QT_LIBRARY MATCHES "qt-mt")
       SET (QT_DEFINITIONS ${QT_DEFINITIONS} -DQT_THREAD_SUPPORT -D_REENTRANT)
     ENDIF(QT_QT_LIBRARY MATCHES "qt-mt")