Build against iRODS 4.2.4.

CMakeLists.txt

 cmake_minimum_required(VERSION 2.8.12)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/CMakeModules")
 
-find_package(IRODS 4.2.3 EXACT REQUIRED)
+find_package(IRODS 4.2.4 EXACT REQUIRED)
 
 message(STATUS "Building for irods-server version ${IRODS_VERSION}")