+ compiler warning fixes for test programs.
+ various build-fixes for test-programs with pdcurses.
+ updated configure checks for X packages in test/configure from xterm
#267 changes.
+ add configure check to gnatmake, to accommodate cygwin.
+ 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.
+ 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).
+ change winnstr() to stop at the end of the line (cf: 970315).
+ add test/test_get_wstr.c
+ add test/test_getstr.c
+ add test/test_inwstr.c
+ add test/test_instr.c
