[2/2] reg.exe: Add a yes/no dialog

[Hugh McMaster]

This patch adds a yes/no dialog and some other minor coding logic to reg.exe, in order to enhance the program as specified in the source code's 'FixMe' comments.

Tested in a standard terminal and in wineconsole's cmd.exe.

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 programs/reg/reg.c |   45 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 4 deletions(-)
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