ncurses 5.6 - patch 20080830

ncurses 5.6 - patch 20080830

+ fixes to make Ada95 demo_panels() example work.
+ modify Ada95 'rain' test program to accept keyboard commands like the
  C-version.
+ modify BeOS-specific ifdef's to build on Haiku (patch by Scott
  Mccreary).
+ add configure-check to see if the std namespace is legal for cerr
  and endl, to fix a build issue with Tru64.
+ consistently use NCURSES_BOOL in lib_gen.c
+ filter #line's from lib_gen.c
+ change delimiter in MKlib_gen.sh from '%' to '@', to avoid
  substitution by IBM xlc to '#' as part of its extensions to digraphs.
+ update config.guess, config.sub from
	http://savannah.gnu.org/projects/config
  (caveat - its maintainer removed support for older Linux systems).