Revert "cassandra: move non-executable bins to share."

This reverts commit 4d04482f74ad470704e4d4514bba32f8da94ad3d.
cassandra: move non-executable bins and patch.

Take two; move the files to libexec and update all the references so they can be found correctly.
cassandra: fix bad inreplace.
gist 4.1.1

Closes #22383.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>