+ correct limit-check in wredrawln, accounting for begy/begx values
(patch by David Benjamin).
+ fix most compiler warnings from clang.
+ amend build-fix for OpenSolaris, to ensure that a system header is
included in curses.h before testing feature symbols, since they
may be defined by that route.
+ fix a null-pointer check in _nc_format_slks() in lib_slk.c, from
20070704 changes.
+ modify _nc_find_type_entry() to use hashing.
+ make CCHARW_MAX value configurable, noting that changing this would
change the size of cchar_t, and would be ABI-incompatible.
+ modify test-programs, e.g,. test/view.c, to address subtle
differences between Tru64/Solaris and HPUX/AIX getcchar() return
values.
+ modify length returned by getcchar() to count the trailing null
which is documented in X/Open (cf: 20020427).
+ fixes for test programs to build/work on HPUX and AIX, etc.
