ncurses 6.1 - patch 20180505

ncurses 6.1 - patch 20180505

+ add deprecation warnings for internal functions called by older
  versions of tack.
+ fix a special case in PutAttrChar() where a cell is marked as
  alternate-character set, but the terminal does not actually support
  the given graphic character.  This would happen in an older terminal
  such as vt52, which lacks most line-drawing capability.
+ use configure --with-config-suffix option to work around filename
  conflict with Debian packages versus test-packages.
+ update tracemunch to work with perl 5.26.2, which changed the rules
  for escaping regular expressions.