[oe] ncurses/libtermcap fixes

[Enrico Scholz]

Hi,

in the last days I committed several changes to the ncurses receipt
which should fix:

* broken widec builds for native/sdk targets

* missing -ltermcap

* implicit -ltinfo on -lncurses (--> this might require a 

  |  bitbake ncurses -c clean

  to take an effect because staging does not change symbolic links to
  regular files on updates)


I saw several patches which deal with this issues and which are probably
not needed anymore.  So, please give recent snapshot a try and see whether
problems are still there.



Enrico