termcap emulation broken

[vandyswa]

With termcap emulation, tgetstr() needs to understand that it uses only the initial two characters of the capability
name. Mostly it has code to do this, but in Karmic I am seeing that the function _nc_find_type_entry() calls
hash_function() on the parameter string without honoring the termcap mode, and thus the hash value incorrectly
reflects subsequent bytes following the two byte capability name. The attached program shows the issue.

[Thomas Dickey (dickey-his)]

This was fixed upstream in

20091114
        + limit hashing for termcap-names to 2-characters (Ubuntu #481740).