cmake: do not build *.pyc on WIN32

python/CMakeLists.txt

@@ -55,7 +55,9 @@ SET(PYTHON_FILES
   )
 
 FOREACH(python ${PYTHON_FILES})
-  PYTHON_BUILD(${PROJECT_NAME} ${python})
+  IF(NOT WIN32)
+    PYTHON_BUILD(${PROJECT_NAME} ${python})
+  ENDIF()
   INSTALL(FILES
     "${CMAKE_CURRENT_SOURCE_DIR}/eigenpy/${python}"
     DESTINATION ${${PYWRAP}_INSTALL_DIR})