Changes in 0.9.2:
* Preventing getch and wgetch functions from blocking other ruby
* Previously ncurses-ruby installed two files named "ncurses.rb" and
"ncurses.so". The "ncurses.so" is now renamed to "ncurses_bin.so"
to prevent "require 'ncurses'" from accidentally loading only the
binary file in case that this is found first in ruby's load path.
* Reintroduced ability to "include" Ncurses functions:
Use "include Ncurses::Namespace" for that. This is implemented via
method_missing, so that ncurses functions (some of which have very
common names) will not hide other functions defined in the extended
scope. (The former method_missing function is properly aliased and
called after an unsuccessful lookup.)