+ continue integrating "sp-funcs" by Juergen Pfeifer (incomplete).
This change finishes merging for menu and panel libraries, does
part of the form library.
+ 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.
+ finish changes to wgetch(), making it switch as needed to the
window's actual screen when calling wrefresh() and wgetnstr(). That
allows wgetch() to get used concurrently in different threads with
some minor restrictions, e.g., the application should not delete a
window which is being used in a wgetch().
+ simplify mutex's, combining the window- and screen-mutex's.
+ change test/ditto.c to use openpty() and xterm.
+ add locks for copywin(), dupwin(), overlap(), overlay() on their
window parameters.
+ add locks for initscr() and newterm() on updates to the SCREEN
pointer.
+ finish table in curs_thread.3x manpage.
