[New Port Request] subversion

[Cappecasper03]

Library name

Subversion

Library description

No response

Source repository URL

https://downloads.apache.org/subversion/

Project homepage (if different from the source repository)

https://subversion.apache.org/

Anything else that is useful to know when adding (such as optional features the library may have that should be included)

https://svn.apache.org/repos/asf/subversion/trunk/INSTALL

Subversion support three different build systems:
- Autoconf/make, for Unix builds
- Visual Studio vcproj, for Windows builds
- CMake, for both Unix and Windows

  The first two have been in use since 2001. Sections A-E below describe
  the classic build system.

  The CMake build system was created in 2024 and is still under
  development. It will be included in Subversion 1.15 and is expected to
  be the default build system starting with Subversion 1.16. Section F
  below describes the CMake build system.