ncurses 6.1 - patch 20190202

ncurses 6.1 - patch 20190202

+ modify rpm test-package ".spec" file to work around naming conflict
  with Redhat's package for ncurses6.
+ modify no-leaks code in test/picsmap to avoid non-standard tdestroy.
+ amend change to configure script which altered the top-level makefile
  to avoid attempting to install the terminfo database when it was not
  configured, to allow for installing the ".pc" files which are also
  in the misc directory (report by Steve Wills).