cdialog

Enhanced version of 'dialog' to work with ncurses

This is an enhanced version of the 'dialog' command. Quoting Thomas Dickey, the ncurses developer, "DIALOG was written by Savio Lam <lam836@cs.cuhk.hk> and modified by several people. "Initially, I made fixes and reviewed the code to ensure that problems reported were not related to ncurses. After that, I resumed development, adding new widget types. See the changelog for details."