Support Vector<DBString>

[Ghabry]

Maniac Patch uses this. Thanks to Jorge Pixel for figuring out how the array is structured.

Citing from the sourcecode

Vector<DBString> is Maniac Patch and is sparse:
When size is > 0xFFFFFFFF there is a gap of "0x800000000 - size"
In other cases it is as above: Size Data ... Size Data

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Note that this is only implemented for Vector<DBString>, not Vector<std::string>. During runtime the vector is not sprase, so every slot consumes memory. As most of the vector is empty our DBString is much more memory friendly.

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lcf2xml for testing