* pkg-config check for `ncurses` fails if it failed previously for `ncursesw`.
  This is the case e.g. for ncurses from NetBSD's pkgsrc.
* No longer assume that any libncurses is not enhanced (X/Open compatible).
* SciTECO and Scinterm require to find a curses.h in the include paths.
  The ncurses check must therefore not be limited to the first best
  ncurses/ncurses.h and the like.
* We now always check for X/Open compatibility and always require
  a curses.h in the standard directories or as given by pkg-config.
* AX_WITH_CURSES was radically rewritten and is now called AX_WITH_NCURSES.
* --with-interface=netbsd-curses gets its own detection code.
  It always requires a curses.h in the standard paths and a libcurses.
  It should now be fixed for real NetBSD installations if the ncurses
  port is installed as well.
* Unified all of the curses-arguments to CURSES_CFLAGS and CURSES_LIBS.
  There is no reason we need PDCURSES_CFLAGS, XCURSES_CFLAGS etc.

It's necessary to get the log since the last successful commit.

maybe, perhaps...

Hopefully fixes the workflow.

Perhaps it will work with irc.libera.chat.

Server 2019 has been deprecated.

Ther rest of mingw32 still appears to exist, though.

* The default womanpage font is the abstract "Serif" now, so that should be
  more portable. "Times" wasn't found on Windows.
* Win32 distributions include a custom .teco_css now, which
  removes the small-caps font attribute from the type label.
  The default Gtk theme on Windows references the "Segoe UI" font
  and it doesn't have a small-caps variant.
  In fact no default Windows font appears to have one.
* We could add a custom .teco_ini to win32 distributions as well,
  but there is currently no need for it.
* Do not distribute the /win32 files. They are used only for building
  Win32/64 packages. There is no point in distributing them in the tarball if
  the /debian and /freebsd directories aren't distributed as well.