Review Request: only query the dns when requesting something from a site not in khtml dns cache.

[Jaime Torres]

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http://reviewboard.kde.org/r/2463/
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Review request for kdelibs.


Summary
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With the DNSPrefetch enabled, khtml is quering the dns for each <a href="..."> in every page rendered (if it is not in its nds cache).
Fortunately, it is not scanning for virus :-) .
With the DNSPrefetch disabled, khtml will query the dns only when requesting something from a site not in its dns cache.


This addresses bug 135230.
    https://bugs.kde.org/show_bug.cgi?id=135230


Diffs
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  /trunk/KDE/kdelibs/khtml/khtml_settings.cpp 1066188 

Diff: http://reviewboard.kde.org/r/2463/diff


Testing
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See latest bug comments.


Thanks,

Jaime