+ add test/savescreen.c test-program
+ add check to trace-file open, if the given name is a directory, add
".log" to the name and try again.
+ add konsole-256color entry -TD
+ add extra gcc warning options from xterm.
+ minor fixes for ncurses/hashmap test-program.
+ modify configure script to quiet c++ build with libtool when the
--disable-echo option is used.
+ modify configure script to disable ada95 if libtool is selected,
writing a warning message (addresses FreeBSD ports/114493).
+ update config.guess, config.sub
