* docs - misc updates to gptransfer

- conref from best practices to admin guide
- qualify use for migration to diff number of segments
- misc edits

* conditionalize

* adding best practice note for setting timezone

* edits to clarify timezone behavior

* docs - clarify settings for low memory queries

* memory_spill_ration range 0-2 for low mem queries

* docs - low memory query config for RQs and RGs

* add missing topic ending tag

* docs - remove gpcrondump/gpdbrestore/gpmfr refs, doc files

* use more generic description for gpbackup/gprestore

* gpbackup has same limitation w.r.t. leaf child parts

* doc: analyzedb - add note about removing previous snapshots to recover space.

* docs: analyzedb -add link to analyze command and analyzedb utility.

-updated XFS mount options
-updated GPDB/ipv4_local_port_range information
-added example for setting blockdev.

PR for 5X_STABLE
Will be ported to MAIN

gp_hashagg_respill_bias has been dead for close to 10 years while
gp_hashjoin_bloomfilter was a leftover from 1fd4d7ee.
gp_hashagg_rewrite_limit was deprecated close to 10 years ago and
made into a no-op.

gp_fault_action and the consumers of gp_backup_directIO* GUCs were
removed with the recent filespaces removal.

* docs - correct the example using --full and -d options

* avoid using --full and --schema-only together, do not prohibit

* clean up schema copy bullet point

* docs - review zstd doc additions, misc related edits

* modify ddl storage example 1 to use zstd

Add a new compression option for append-optimized tables, "zstd". It is
generally faster than zlib or quicklz, and compresses better. Or at least
it can be faster or compress better, if not both at the same time, by
adjusting the compression level. A major advantage of Zstandard is the wide
range of tuning, to choose the trade-off between compression speed and
ratio.

Update documentation to mention "zstd" alongside "zlib" and "quicklz". More
could be done; all the examples still use zlib or quicklz, for example, and
I think we want to emphasize Zstandard more in the docs, over those other
options. But this is the bare minimum to keep the docs factually correct.

Using the new option requires building the server with the libzstd library.
A new --with-zstd option is added for that. The default is to build without
libzstd, for now, but we should probably change the default to be on, after
we have had a chance to update all the buildfarm machines to have libzstd.

Patch by Ivan Leskin, Dmitriy Pavlov, Anton Chevychalov. Test case, docs
changes, and some minor editorialization by Heikki Linnakangas.

* docs - qualify some resource-queue specific content (part 1)

* explicitly state resource groups do not use gp_vmem_protect_limit

* RQ/RG qualify some gucs and system tables/views

* qualify gp_toolkit RQ content

* add RG segment memory calculation

* clarify resgroup perseg memory based on active primary segs on host

* remove max_resource_groups guc again

* Edits to make 'resource management' using resource queues, resources groups, consistent throughout. This is to distinguish between resource management and general workload profiles, as well as to avoid conusion with Workload Manager product.

* Edits from Lisa's review

* updating security guide landing page and main sections to use consistent short descriptions.

* making security title consistent with others

* updating best practices guide landing page and main sections to use consistent short descriptions.

* updating utility guide main sections to use consistent short descriptions.

* Initial updates for Best Practices

* Additional comments from review

* Changes from Craig Sylvester

* David's comments from PR, changes to code output from reviewers

* Review tweaks

* Update text for deprecated LOG ERRORS <table>

* Remove deprecation note for gpdb5.

[ci skip]

* docs: fix broken links and permanent redirects

* fix doubled slashes in URLs