Using the two Windows binaries, starting a game with the tty
interface (nethack.exe) and saving, then restoring and finishing with
the win32 interface (nethackW.exe) would display the topten output as a
series of popup windows displaying one line at a time. The win32 binary
forces the toptenwin option to 1, but when restoring a saved game that
would get overridden by data from the save file and could end up 0.
This change keeps the toptenwin option out of save files, like color
and other display-oriented features that might not be applicable when
restoring on something with different capabilities. Separate binaries
for alternate interfaces aren't quite the same situation, but close enough.
The toptenwin option can still be toggled interactively with 'O', but the
new value will disappear if you save rather than finish. Setting it once
via config file or environment variable is the preferred way to go if you
want to override the default behavior.
Both trunk and branch get iflags.toptenwin added. For the trunk,
flags.toptenwin is simply deleted and patchlevel.h's EDITLEVEL is bumped.
For the branch, flags.toptenwin is renamed and becomes unused, while
EDITLEVEL is left alone. Leaving a dummy field in the old toptenwin slot
of struct flags preserves save file compatability with 3.4.3.
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