[PATCH] stop debugger recursion when multiple resets caught.

[Anton Blanchard]

> Please apply the following patch to Ameslab.  It fixes one of the
> most serious KDB problems at this time: incorrect handling of
> recursive calls into the debugger from unexpected exceptions.
>
> For example, hitting the little yellow button repeatedly is currently
> causing all sorts of havoc in KDB, as are some other, more bizarre
> circumstances.  This patch should fix these.

Applied.

Anton

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