libncursesw5-dev for ruby 1.9+

[grosser]

Without this lib utf8 chars are broken in curses (commandline apps),
it would be great if it would somehow get installed before installing ruby.
Its no hard dependency, just a nice thing to have.

[jeremy]

The system ncurses is working fine for me. What issues are you seeing?

[grosser]

utf8 chars are not displayed correctly in 'curses' (no idea if its ok in curses), when this lib is not installed
ill try to reproduce it on a clean aws instance

a test for it: http://redmine.ruby-lang.org/issues/975

[jeremy]

Ah, I was thinking readline.

[sstephenson]

I think this is outside the scope of ruby-build. It should be possible to install the library yourself and get Ruby to build against it.