ENH: Fix case of windows library names to support

      cross compiling w/ Qt on case sensitive platforms.

Modules/FindQt4.cmake

@@ -1248,8 +1248,8 @@ IF (QT4_QMAKE_FOUND)
   ENDIF(Q_WS_X11)
   
   IF(Q_WS_WIN)
-    SET(QT_GUI_LIB_DEPENDENCIES ${QT_GUI_LIB_DEPENDENCIES} Imm32 Winmm)
-    SET(QT_CORE_LIB_DEPENDENCIES ${QT_CORE_LIB_DEPENDENCIES} Ws2_32)
+    SET(QT_GUI_LIB_DEPENDENCIES ${QT_GUI_LIB_DEPENDENCIES} imm32 winmm)
+    SET(QT_CORE_LIB_DEPENDENCIES ${QT_CORE_LIB_DEPENDENCIES} ws2_32)
   ENDIF(Q_WS_WIN)
   
   IF(Q_WS_MAC)