2010/04/28
+ several improvements to configure script:
+ modify CF_CURSES_TERM_H to handle cases such as cygwin where
packager has installed curses.h and term.h in different
directories, e.g., to wedge in a termcap library.
+ modify CF_XOPEN_SOURCE, adding special case for OpenSolaris
+ modify CF_MAKE_TAGS to add check for exctags and exetags, prefer to
ctags and etags to work around pkgsrc (NetBSD) renaming.
+ correct CF_FIND_LINKAGE, setting cache variable for library_file in
the special case where no directory search is made.
+ improve CF_GCC_VERSION, suppress stderr for c89 alias of gcc.
+ improve CF_GCC_WARNINGS, moving -W and -Wall into the list to
check, since c89 alias for gcc complains about these options.
+ modify CF_HEADER_PATH, to not search for variations of everything
in the current include-path
+ use "mkdir -p", remove mkdirs.sh
+ use CF_CURSES_HEADER to fill in possible subdirectory used for
ncurses header filename.
+ modify CF_XOPEN_CURSES to work around current ncurse header loss of
predefinition of _XOPEN_SOURCE_EXTENDED
+ add "--disable-rpath-hack" option, along with scripting to add
rpath option to libraries found in unusual places.
+ modify pause widget to autosize like gauge, and to omit the area for
buttons when none are displayed.
+ fix an infinite loop in dlg_button_layout() if there are no buttons
to display (Debian #579390).
+ add makefile rules for generating html, etc., documentation from
nroff.
> patches by Samuel Mart
+ reset errors in tailbox before reading new character.
+ modify dlg_draw_scrollbar(), omitting hiding percentages in boxes
when no arrows or scrollbar are needed.
+ correct value of row for scrollbars in formbox.
+ update es.po from
http://translationproject.org/latest/dialog/
533fc04d17