Log Message:
Update to 7.0.0.4

  A lot of fixes and improvements from previous release in utilities
  and portability code.
  See https://github.com/cheusov/nbase for details.

  Introduce CURSES_LIBNAME build-time variable (see doc/INSTALL)

  Almost all utilities set WARNERR to YES.

  Latest mk-configure is needed for build.

  This release was successfully tested on SunOS-5.11, FreeBSD-12.0.3,
  NetBSD-8 and 8.99, OpenBSD-6.4, Darwin and diverse glibc-based
  Linuxes. GCC and CLang compilers were tested.