* Provide geos-config, and fix dynamic builds on Unix

* x-add-version

* Fix debug suffix handling

* Update git-tree

* Don't build benchmarks

* Revise pc file and geos-config handling

Fixup pc files.
Add -lgeos to Libs.private to satisfy common usage requirement
(already present in geos-config).
Install executable geos-config into tools.
Rewrite geos-config relocatability as patch.

* Port to non-deprecated cmake functions

* Add usage

* Update git-tree

* [geos] Update to 3.9.0

* update version record

* Fix linking of geos for mingw

Linking stage is failing due to the multiple definitions of the same symbol.
One way of fixing this is to disable inlining for small functions by passing DISABLE_GEOS_INLINE=ON for mingw builds.

* Bump the port version.

* [geos] Bump version

Co-authored-by: JackBoosY <yuzaiyang@beyondsoft.com>

* [vcpkg] Add "Homepage" field to the CONTROL files.

* [geos] update to 3.6.3

* [geos] Slight modernization

* [geos] Move geos-config to /share/geos/

* [geos] Make share/geos directory

* [GEOS] Generate debug library names with `d` suffix

Currently geos.lib name is used for both, debug and optimised
GEOS libraries. This leads to situation when:
```
find_library(GEOS_LIBRARY_DEBUG NAMES geos)
find_library(GEOS_LIBRARY_RELEASE NAMES geos)
```

finds the same library for both
```
GEOS_LIBRARY_DEBUG=D:/vcpkg/installed/x64-windows/debug/lib/geos.lib
GEOS_LIBRARY_RELEASE=D:/vcpkg/installed/x64-windows/debug/lib/geos.lib
```

This is minimal patch that works around the problem.

Next, complete fix should be submitted to GEOS upstream,
preferably using exported targets.

* [libspatialite] Add missing geos suffixes in static builds