+20150131
+ + regenerated ".map" and ".sym" files using improved script, showing
+ the combinations of configure options used at each stage.
+
+20150124
+ + add configure check to determine if "local: _*;" can be used in the
+ ".map" files to selectively omit symbols beginning with "_". On at
+ least recent FreeBSD, the wildcard applies to all "_" symbols.
+ + remove obsolete/conflicting rule for ncurses.map from
+ ncurses/Makefile.in (cf: 20130706).
+