REL8_4_8_10

PostgreSQL 18 Release Build 10

* prepare for PL/R release of 8.4.8.10
* Not expected to affect end-user programming
* Explicitly literally request pkg "libgomp" (OpenMP) of build of IntelAMD(non-arm) Mingw
* * Resolved Collect2.exe linker error on IntelAMD(non-arm) Mingw
* * * Inherited from Mingw pacman that "now correctly" does not install "gcc" optional pkg "libgomp"
* Trivial removals resolving "warn" of no longer used variables of TRIGGERTUPLEVARS
* * Identified by CC flag -Wunused-variable
* Trivial additions resolving "warn" of GCC 14 and Clang 5.0 missing "extern" declarations
* * Identified by CC flag -Wmissing-variable-declarations

PL/R Releases for Windows and Cygwin

Windows users

* plr-matid-**-*-UCRT64-x64-R<Rversion>-PG<PGversion>-Release.zip

Windows Future 11 ARM users

* plr-matid-**-*-CLANGARM64-x64-Rdevel-PG18.6-Debug.zip

Cygwin users

* plr-matid-01-*-cygwin-x64-R*-PG*-Release.zip

Cygwin Legacy x86 users

* plr-apvid-01-*-cygwin-x86-R*-PG*-Release.7z

Windows Legacy R x64 users

* plr-apvid-**-*-msvc-x64-R4.2.3-PGREL_16_STABLE-Debug.zip
* plr-apvid-**-*-msvc-x64-R4.2.3-PG16/15/14/13/12/11-Release.zip
* plr-apvid-**-*-msvc-x64-R4.2.3-PGREL_11_STABLE-Debug.zip

Windows Legacy R x86 users

* plr-apvid-**-*-msvc-x86-R4.1.3-PG10-Release.zip
* plr-apvid-**-*-msvc-x86-R4.1.3-PGREL_10_STABLE-Debug.zip