Are the _d_arrayappend functions, thread-safe?

[Jeff Davey]

Ack, I pasted the wrong function (that one was a result of some debugging).

Here's the right one:

	char[][] split(char[] data)
	{
		char[][] rtn;
		int lastPos = 0;
		int index = 0;

		int numSpaces = std.string.count(data, " ");
		rtn = new char[][numSpaces + 1];
		if (numSpaces > 0)
		{
			for (int i = 0; i < data.length; i++)
			{
				if (data[i] == ' ')
				{
					rtn[index++] = data[lastPos .. i];
					lastPos = i + 1;
				}
			}
		}
		rtn[index] = data[lastPos .. data.length];

		return rtn;
	}

There might still be some issues with something else local, but I'm finding it very strange that replacing std.string.split with that function, I'm no longer segfaulting.