+ updated release notes
+ amend a warning message from tic which should have flagged misuse
of "XT" capability in "screen" terminal description.
> terminfo changes:
+ trim "XT" from screen entry, add comments to explain why it was
not suitable -TD
+ modify iterm to use xterm+sl-twm building block -TD
+ mark konsole-420pc, konsole-vt100, konsole-xf3x obsolete reflecting
konsole's removal in 2008 -TD
+ expanded the history section of konsole to explain its flawed
imitation of xterm's keyboard -TD
+ use xterm+x11mouse in screen.* entries because screen does not yet
support xterm's 1006 mode -TD
+ add nsterm-build400 for macOS 10.13 -TD
+ add ansi+idc1, use that in ansi+idc adding dch for consistency -TD
+ update vte to vte-2017 -TD
+ add ecma+strikeout to vte-2017 -TD
+ add iterm2-direct -TD
+ updated teraterm, added teraterm-256color -TD
+ add mlterm-direct -TD
+ add descriptions for ANSI building-blocks -TD
+ build-fix for Ada95 on older platforms without stdint.h
+ build-fix for Solaris, whose /bin/sh and /usr/bin/sed are non-POSIX.
+ update release announcement, summarizing more than 800 changes across
more than 200 snapshots.
+ minor fixes to manpages, etc., to simplify linking from announcement
page.
+ update release notes, for 5.8.
+ regenerated html manpages.
+ change open() in _nc_read_file_entry() to fopen() for consistency
with write_file().
+ modify misc/run_tic.in to create parent directory, in case this is
a new install of hashed database.
+ fix typo in Ada95/mk-1st.awk which causes error with original awk.
+ add cons25-debian entry (patch by Brian M Carlson, Debian #607662).
