Fixed a missed version number update

One location was missed in the previous commit. This commit corrects
that oversight.

(internal: 7955811)

Fixed incorrect references to the appendix document

Removed unintended line breaks in reference strings in Excel file.

(internal: 08aba87, [SI-120])

Assort of documentation fixes

1. Add mising report item name for -r option in documentation

 HardwareInformation was added as a report item, but it has been
 missing in the documentaiton.  Add missing "HardwareInformation"
 report item for -r option, for completeness.
 (internal: 58d57dc, [SI-132])

2. Align documentation with implementation

 The description of pg_statsinfo.rusage_track* parameters in the manual
 was inconsistent with the implementation. This commit corrects that.

 Corrected items include:
 - Database Statistics > Database Resource Usage (rusage)
 - Query Activity > Statements (rusage)
   Plan User Time / Plan Sys Time / Exec User Time / Exec Sys Time
 (internal: 6505b1d, [SI-126])

3. Align documentation with implementation

 Fixed an incorrectly documented initial value in the repository.

 The corrected item is:

 In pg_statsinfo_v16_repository_information.xls, the initial value for
 the "garbage_size" item in the "alert" sheet was corrected from 20000
 to -1.
 (internal: dfaccdf, [SI-131])

Update copyright years in files

(Issue #175)

Update copyright years in files

(Issue #175)

Add update notice for upgrading from 15.0/15.1 to 15.3 or later

Special action is required when upgrading pg_statsinfo from 15.0 or
15.1 to 15.3 or later. This commit adds a file to provide information
about the required actions.

(internal: 5d199b2, issue #172)

Add update notice for upgrading from 14.0, 14.1, 14.2 to 14.4 or later

Special action is required when upgrading pg_statsinfo from 14.0, 14.1
and 14.2 to 14.4 or later. This commit adds a file to provide
information about the required actions.

(internal: ce3db1e, issue #172)

Apply left-over updates to the file pg_statsinfo.spec

The previous commits missed some updates intended for the
pg_statsinfo.spec file. This commit applies the updates to the file.

Bump version to 14.3

Bump version to 15.2