ncurses 5.7 - patch 20090815

ncurses 5.7 - patch 20090815

+ correct use of terminfo capabilities for initializing soft-keys,
  broken in 20090509 merging.
+ modify wgetch() to ensure it checks SIGWINCH when it gets an error
  in non-blocking mode (patch by Clemens Ladisch).
+ use PATH_SEPARATOR symbol when substituting into run_tic.sh, to
  help with builds on non-Unix platforms such as OS/2 EMX.
+ modify scripting for misc/run_tic.sh to test configure script's
  $cross_compiling variable directly rather than comparing host/build
  compiler names (prompted by comment in GenToo #249363).
+ fix configure script option --with-database, which was coded as an
  enable-type switch.
+ build-fixes for --srcdir (report by Frederic L W Meunier).