* removing/rewording interconnect docs as only UDPIFC is supported in 5.0.0

* update docs to return TCP as valid interconnect for 5.0.0

* removing incorrect warnings stating that GPORCA is not compatible with gpperfmon db

* doc changes to support GPORCA on by default

* moving linux kerberos client instructions to dedicated topic, and placing it parallel with existing windows topic

* removing map and dita files for connectivity package, which is no longer provided

* removing more references to connectivity packages; conditionalizing postgres odbc/jdbc vs datadirect drivers for oss/pivotal audiences

* adding .ditaval for handling pivotal conditions; [ci skip]

* relocating pivotal ditaval

* adding .ditaval for handling pivotal conditions; [ci skip]

* relocating pivotal ditaval

* removing/fixing old references to 4.3 version

* removing pgcrypto.fips mentions

* small fix to version format

* removing 'orca' from package version strings

* changing rhel5 to rhel6 in example version strings

Signed-off-by: NMarbin Tan <mtan@pivotal.io>

* GPDB DOCS - XML gucs xmlbinary, xmloption

* update to fix typos.

* one more fix.

[ci skip]

[ci skip]

removing duplicated hadoop compatibility table; clarifying that some hadoop versions no longer supported (#2075)

* docs: fix broken links and permanent redirects

* fix doubled slashes in URLs

The gp_external_grant_privileges GUC was needed before 4.0 to let
non superusers create external tables for gphdfs and http protocols.
This GUC was however deprecated during the 4.3 cycle so remove all
traces of it. The utility of the GUC was replaced in 4.0 when rights
management for external tables was implemented with the normal GRANT
REVOKE framework so this has been dead code for quite some time.

Remove GUC, code which handles it, all references to it from the
documentation and a release notes entry.

* add to release notes, update wording

* relnotes edits

* rebase and fix

* toolkit fixes

* attempting guc fix

* removing unnecessary ditamap