initdb pg_basebackup: Rename --noxxx options to --no-xxx

initdb pg_basebackup: Rename --noxxx options to --no-xxx

--noclean and --nosync were the only options spelled without a hyphen,
so change this for consistency with other options.  The options in
pg_basebackup have not been in a release, so we just rename them.  For
initdb, we retain the old variants.

Vik Fearing and me