ncurses 5.9 - patch 20111112

ncurses 5.9 - patch 20111112

+ add pccon entries for OpenBSD console (Alexei Malinin).
+ build-fix for OpenBSD 4.9 with gcc 4.2.1, setting _XOPEN_SOURCE to
  600 to work around inconsistent ifdef'ing of wcstof between C and
  C++ header files.
+ modify capconvert script to accept more than exact match on "xterm",
  e.g., the "xterm-*" variants, to exclude from the conversion (patch
  by Robert Millan).
+ add -lc_r as alternative for -lpthread, allows build of threaded code
  in older FreeBSD machines.
+ build-fix for MirBSD, which fails when either _XOPEN_SOURCE or
  _POSIX_SOURCE are defined.
+ fix a typo misc/Makefile.in, used in uninstalling pc-files.