ncurses 5.9 - patch 20150502

ncurses 5.9 - patch 20150502

+ modify the configure script to allow different default values
  for ABI 5 versus ABI 6.
+ add wgetch-events to test-packages.
+ add a note on how to build ncurses-examples to test/README.
+ fix a memory leak in delscreen (report by Daniel Kahn Gillmor,
  Debian #783486) -TD
+ remove unnecessary ';' from E3 capabilities -TD
+ add tmux entry, derived from screen (patch by Nicholas Marriott).
+ split-out recent change to nsterm-bce as nsterm-build326, and add
  nsterm-build342 to reflect changes with successive releases of OSX
  (discussion with Leonardo B Schenkel)
+ add xon, ich1, il1 to ibm3161 (patch by Stephen Powell, Debian
  #783806)
+ add sample "magic" file, to document ext-putwin.
+ modify gen-pkgconfig.in to add explicit -ltinfo, etc., to the
  generated ".pc" file when ld option "--as-needed" is used, or when
  ncurses and tinfo are installed without using rpath (prompted by
  discussion with Sylvain Bertrand).
+ modify test-package for ncurses6 to omit rpath feature when installed
  in /usr.
+ add OSX's "*.dSYM" to clean-rules in makefiles.
+ make extra-suffix work for OSX configuration, e.g., for shared
  libraries.
+ modify Ada95/configure script to work with pkg-config
+ move test-package for ncurses6 to /usr, since filename-conflicts have
  been eliminated.
+ corrected build rules for Ada95/gen/generate; it does not depend on
  the ncurses library aside from headers.
+ reviewed man pages, fixed a few other spelling errors.
+ fix a typo in curs_util.3x (Sven Joachim).
+ use extra-suffix in some overlooked shared library dependencies
  found by 20150425 changes for test-packages.
+ update config.guess, config.sub from
	http://git.savannah.gnu.org/cgit/config.git