[PATCH] Update script

[NIIBE Yutaka]

Hello,

Thanks for your patches.

I applied the first two, which require no discussion.  For others, let
me have more time.

Firstly, for Python programming, I think that all import should be done
earlier (not only in some function or in some if clause).  That's
because if import fails in the deep call chain, sometime, it is a
disaster, where user can do no recovery.

Secondly, I don't agree the way like
0004-Kill-scdaemon-on-connection-failure.patch.  Let user invoke the
command.

For 0005-Handle-CLI-parsing-protect-from-mistakes-and-give-me.patch, I
partially agree it will be useful, but I wonder if your intended "user"
uses GUI or not.
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