Gnats 5149: Slot value Incell QLineEdit Paste doesn't always work.

In the slot value displays (e.g. the open series-slot dialog), values can be copied and pasted at several levels. Just selecting cells and performing copy and paste operations does work.

But when using the incell line editor (QLineEdit) widget's copy and paste context-menu operations, pasted numeric text apparently doesn't "take" -- the pasted text is ignored unless an additional edit is performed on the pasted numeric text.

This problematic paste operation is somewhat obscure: users will much more likely to be using the higher-level paste functions which do work (i.e. on the selected cells, not during an active incell edit of a single cell).

This problem is now seen in both RiverWare 6.1.1 and 6.2 development [Jan. 2011] using Qt 4.6.3.

	(1) In an incell editor, select the text, right-click, COPY.
	(2) In a different incell editor, select the text, right-click, PASTE.
	(3) See that the expected text was pasted.
	(4) However, when finishing the incell edit, e.g. by hitting return or clicking outside of the incell editor, the previously pasted text is lost and the cell is reverted back to its initial value.

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