Mc issues (#588)

Addresses five outstanding Issues in the `mc` reference docs.

- Adds `--disable-multipart` flag for `mc mv` (Closes #516 )
- Adds `mc pipe` to reference docs (Closes #517 )
- Adds `mc undo` to reference docs (Closes #520 )
- Adds `mc support top` commands to replace `mc admin top` (Closes #526)
- Updates `mc cp`, `mc mirror`, `mc replicate`, and `mc admin replicate`
to clarify the differences in what copies (Closes #532)

source/reference/minio-mc/mc-support-top.rst

@@ -0,0 +1,54 @@
+==================
+``mc support top``
+==================
+
+.. default-domain:: minio
+
+.. contents:: Table of Contents
+   :local:
+   :depth: 2
+
+.. mc:: mc support top
+
+.. note::
+
+   .. versionchanged:: RELEASE.2022-08-11T00-30-48Z
+
+   ``mc support top`` replaces the ``mc admin top`` command.
+
+Description
+-----------
+
+.. start-mc-support-top-desc
+
+The :mc:`mc support top` command returns statistics for distributed
+MinIO deployments, similar to the output of the ``top`` command in a shell. 
+
+:mc:`mc support top` is not supported on single-node single-drive MinIO deployments.
+
+.. end-mc-support-top-desc
+
+:mc-cmd:`mc support top` has the following subcommands:
+
+- :mc-cmd:`~mc support top api`
+- :mc-cmd:`~mc support top locks`
+- :mc-cmd:`~mc support top disk`
+
+Refer to the pages linked above for each subcommand for details.
+
+Syntax
+------
+
+The command has the following syntax:
+
+.. code-block:: shell
+
+   mc support top COMMAND [COMMAND FLAGS] [ARGUMENTS ...]
+
+.. toctree::
+   :titlesonly:
+   :hidden:
+   
+   /reference/minio-mc/mc-support-top-api
+   /reference/minio-mc/mc-support-top-locks
+   /reference/minio-mc/mc-support-top-disk