ncurses 5.9 - patch 20141220

+ updated Ada95/configure with macro changes from 20141213
+ tie configure options --with-abi-version and --with-versioned-syms
  together, so that ABI 6 libraries have distinct symbol versions from
  the ABI 5 libraries.
+ replace obsolete/nonworking link to man2html with current one,
  regenerate html-manpages.