Let utilities identify themselves as being part of uutils in `--help` and `--version`

[terrahornbeck378]

I had a tool in $PATH and needed to determine whether its from GNU coreutils/findutils/... , busybox, or uutils. While the GNU and Busybox state their origin in the --help and --version , uutils stays (mostly) silent about its origin.

Add something like part of uutils to --help and also mention uutils in the --version output.

diffutils currently does support neither --version nor --help.

Note: This bug is part of a series of bugreports across all tools of uutils. Please check wether I've covered all your utilities.

Related:

• --version should provide uutils-specific identifier coreutils#7427
• Let utilities identify themselves as being part of uutils in --help and --version coreutils#12114
• Let utilities identify themselves as being part of uutils in --help and --version tar#273
• Let utilities identify themselves as being part of uutils in --help and --version procps#690
• Let utilities identify themselves as being part of uutils in --help and --version util-linux#538
• Let utilities identify themselves as being part of uutils in --help and --version acl#298
• Let utilities identify themselves as being part of uutils in --help and --version findutils#672
• Let utilities identify themselves as being part of uutils in --help and --version sed#407
• Let utilities identify themselves as being part of uutils in --help and --version awk#2
• Let utilities identify themselves as being part of uutils in --help and --version #222
• Let utilities identify themselves as being part of uutils in --help and --version bsdutils#128
• Let utilities identify themselves as being part of uutils in --help and --version shadow-rs#161
• Let utilities identify themselves as being part of uutils in --help and --version hostname#290