+ add configure option --enable-weak-symbols to turn on new feature.
+ add configure-check for availability of weak symbols.
+ modify linkage with pthread library to use weak symbols so that
applications not linked to that library will not use the mutexes,
etc. This relies on gcc, and may be platform-specific (patch by Dr
Werner Fink).
+ add note to INSTALL to document limitation of renaming of tic library
using the --with-ticlib configure option (report by Dr Werner Fink).
+ document (in manpage) why tputs does not detect I/O errors (prompted
by comments by Samuel Thibault).
+ fix remaining warnings from Klocwork report.
+ 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).
+ add "widec" row to _tracedump() output to help diagnose remaining
problems with multi-column characters.
+ partial fix for refresh of window on top of multi-column characters
which are partly overwritten (report by Sadrul H Chowdhury).
+ ignore A_CHARTEXT bits in vidattr() and vid_attr(), in case
multi-column extension bits are passed there.
+ add setlocale() call to demo_panels.c, needed for wide-characters.
+ add some output flags to _nc_trace_ttymode to help diagnose a bug
report by Larry Virden, i.e., ONLCR, OCRNL, ONOCR and ONLRET,
