Used in several places; avoids inclusion of osl/endian.h and use of ifdefs for the task. Change-Id: I87a7b41ef6d0edc3fee39cc192f7abe09f7e45df Reviewed-on: https://gerrit.libreoffice.org/c/core/+/186928 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>