On canadian cross build-gcc reports its version as '13-win32'.
ncurses >=6.3 correctly interprets this line as '13', but older
ncurses versions fail and jump into wrong conclusions.
Let's cherry-pick related changes from mainline ncurses.
Signed-off-by: Kirill K. Smirnov <kirill.k.smirnov@gmail.com>
Also fix test-packages: it was saving the output from CT_DoLog into
the checksum file. Also use one file per version.
Signed-off-by: Alexey Neyman <stilor@att.net>