* ext/curses/extconf.rb: check the size of chtype.

* ext/curses/curses.c (NUM2CH, CH2NUM): use proper macros for
  the size of chtype.

[ruby-core:56090] [Bug #8659]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43074 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-09-28

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43075 b2dd03c8-39d4-4d8f-98ff-823fe69b080e