uCON64 Code (SVN)

- Small fix for DragonFly BSD. Not needed for uCON64.

- Set ucon64.newline_before_rom to 0 for --ispad, --strip, --stp, --stpn,
--ins and --insn.

- Fixed link to page explaining the installation of pkgsrc on macOS.

- Fixed --col.
+ Corrected conversion to and from SNES color values.
+ Made distinction between SNES color value and search string.

- Added suppression for warning that was enabled by an early update to Visual
Studio 2022.

- Fixed minor off-by-one issue with --range.

- Added support for DragonFly BSD.

- Fixed configure.in by using host and host_cpu instead of target and
target_cpu.
- Generated configure with Autoconf 2.71.
- Updated config.guess and config.sub with the ones that come with Autoconf
2.71.

- Updated the year.
- Added support for Visual Studio 2022. The functions inp{w}() en outp{w}() are
treated as (undocumented) intrinsics and appear to work, but Visual Studio 2022
does not provide a header with declarations. So, calls to them result in
compiler warnings about intrinsics without declarations. Instead of suppressing
those warnings I chose to start using the actually documented intrinsics
__inbyte(), __inword(), __outbyte() and __outword() from Visual Studio 2022
onward.

- Third time's a charm ;-)