Release: NEWS for v1.5.3 and version update#1158

davidozog merged 1 commit intoSandia-OpenSHMEM:mainSandia-OpenSHMEM/SOS:mainfrom

davidozog:pr/v1.5.3-NEWSdavidozog/sandia-shmem:pr/v1.5.3-NEWSCopy head branch name to clipboard