+ fix case where progs/tput is used while sp-funcs is configure; this
requires save/restore of out-character function from _nc_prescreen
rather than the SCREEN structure (report by Charles Wilson).
+ fix typo in man/curs_trace.3x which caused incorrect symbolic links
+ improved configure macros CF_GCC_ATTRIBUTES, CF_PROG_LINT.
+ continue integrating "sp-funcs" by Juergen Pfeifer (incomplete).
+ modify declaration of cur_term when broken-linker is used, but
enable-reentrant is not, to match pre-5.7 (report by Charles Wilson).
+ modify _nc_panelhook() data to account for a permanent memory leak.
+ fix memory leaks in test/demo_menus
+ fix most warnings from Klocwork tool (report by Larry Zhou).
+ modify configure script CF_XOPEN_SOURCE macro to add case for
"dragonfly" from xterm #236 changes.
+ modify configure script --with-hashed-db to let $LIBS override the
search for the db library (prompted by report by Samson Pierre).
+ modify wgetch() to use the screen which corresponds to its window
parameter rather than relying on SP; some dependent functions still
use SP internally.
+ factor out most use of SP in lib_mouse.c, using parameter.
+ add internal _nc_keyname(), replacing keyname() to associate with a
particular SCREEN rather than the global SP.
+ add internal _nc_unctrl(), replacing unctrl() to associate with a
particular SCREEN rather than the global SP.
+ add internal _nc_tracemouse(), replacing _tracemouse() to eliminate
its associated global buffer _nc_globals.tracemse_buf now in SCREEN.
+ add internal _nc_tracechar(), replacing _tracechar() to use SCREEN in
preference to the global _nc_globals.tracechr_buf buffer.
+ add test/key_name.c
+ add stdscr cases to test/inchs.c and test_inch_wide.c
+ update test/configure
+ correct formatting of DEL (0x7f) in _nc_vischar().
+ null-terminate result of wunctrl().
+ add null-pointer check in key_name() (report by Andreas Krennmair,
cf: 20020901).
