retries: Swap the order of args to retries combinator

retries: Swap the order of args to retries combinator

[ "/bin" XATTR_NOFOLLOW swapd list-xattrs-impl ]
<immediate> { 2 4 100000 } retries .

    [ 2 = [ "not 2!" throw ] unless ]
    10 20 <random-wait> 3 retries

looks better than

    [ 2 = [ "not 2!" throw ] unless ]
    3 10 20 <random-wait> retries ! old