+ remove a spurious newline from output of html.m4, which caused links
for Ada95 html to be incorrect for the files generated using m4.
+ start investigating mutex's for SCREEN manipulation (incomplete).
+ minor cleanup of codes.c/names.c for --enable-const
+ expand/revise "Routine and Argument Names" section of ncurses manpage
to address report by David Givens in newsgroup discussion.
+ fix interaction between --without-progs/--with-termcap configure
options (report by Michail Vidiassov).
+ fix typo in "--disable-relink" option (report by Michail Vidiassov).
+ restore a call to obtain screen-size in _nc_setupterm(), which
is used in tput and other non-screen applications via setupterm()
(Debian #433357, reported by Florent Bayle, Christian Ohm,
cf: 20070310).
+ increase size of array in _nc_visbuf2n() to make "tic -v" work
properly in its similar_sgr() function (report/analysis by Peter
Santoro).
+ add --enable-reentrant configure option for ongoing changes to
implement a reentrant version of ncurses:
+ libraries are suffixed with "t"
+ wrap several global variables (curscr, newscr, stdscr, ttytype,
COLORS, COLOR_PAIRS, COLS, ESCDELAY, LINES and TABSIZE) as
functions returning values stored in SCREEN or cur_term.
+ move some initialization (LINES, COLS) from lib_setup.c,
i.e., setupterm() to _nc_setupscreen(), i.e., newterm().
