+20150221
+ + capture define's related to -D_XOPEN_SOURCE from the configure check
+ and add those to the *-config and *.pc files, to simplify use for
+ the wide-character libraries.
+ + modify ncurses.spec to accommodate Fedora21's location of pkg-config
+ directory.
+ + correct sense of "--disable-lib-suffixes" configure option (report
+ by Nicolas Boos, cf: 20140426).
+