trying to repair OpenEXR detection

OpenCVFindOpenEXR.cmake

-# The script is taken f
+# The script is taken from http://code.google.com/p/nvidia-texture-tools/
 
 #
 # Try to find OpenEXR's libraries, and include path.
@@ -9,6 +9,8 @@
 # OPENEXR_LIBRARIES = libraries that are needed to use OpenEXR.
 # 
 
+SET(OPENEXR_LIBRARIES)
+
 SET(LIBRARY_PATHS 
     /usr/lib
     /usr/local/lib
@@ -39,31 +41,24 @@ FIND_LIBRARY(OPENEXR_ILMIMF_LIBRARY
     NAMES IlmImf
     PATHS ${LIBRARY_PATHS})
 
-FIND_LIBRARY(OPENEXR_ILMTHREAD_LIBRARY
-    NAMES IlmThread
-    PATHS ${LIBRARY_PATHS})
-
-#MESSAGE(STATUS ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY} zlib)
-
 IF (OPENEXR_INCLUDE_PATH AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
     SET(OPENEXR_FOUND TRUE)
     SET(OPENEXR_INCLUDE_PATHS ${OPENEXR_INCLUDE_PATH} CACHE STRING "The include paths needed to use OpenEXR")
-    SET(OPENEXR_LIBRARIES ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} ${OPENEXR_ILMTHREAD_LIBRARY} zlib CACHE STRING "The libraries needed to use OpenEXR")
-ENDIF (OPENEXR_INCLUDE_PATH AND OPENEXR_IMATH_LIBRARY AND OPENEXR_ILMIMF_LIBRARY AND OPENEXR_IEX_LIBRARY AND OPENEXR_HALF_LIBRARY)
+    SET(OPENEXR_LIBRARIES ${OPENEXR_IMATH_LIBRARY} ${OPENEXR_ILMIMF_LIBRARY} ${OPENEXR_IEX_LIBRARY} ${OPENEXR_HALF_LIBRARY} zlib CACHE STRING "The libraries needed to use OpenEXR")
+ENDIF ()
 
 IF(OPENEXR_FOUND)
     IF(NOT OPENEXR_FIND_QUIETLY)
         MESSAGE(STATUS "Found OpenEXR: ${OPENEXR_ILMIMF_LIBRARY}")
-    ENDIF(NOT OPENEXR_FIND_QUIETLY)
-ELSE(OPENEXR_FOUND)
+    ENDIF()
+ELSE()
     IF(OPENEXR_FIND_REQUIRED)
         MESSAGE(FATAL_ERROR "Could not find OpenEXR library")
-    ENDIF(OPENEXR_FIND_REQUIRED)
-ENDIF(OPENEXR_FOUND)
+    ENDIF()
+ENDIF()
 
 MARK_AS_ADVANCED(
     OPENEXR_INCLUDE_PATHS
-    OPENEXR_LIBRARIES
     OPENEXR_ILMIMF_LIBRARY
     OPENEXR_IMATH_LIBRARY
     OPENEXR_IEX_LIBRARY