This removes the unusable InsetExternal::Params::parameters variable; Rewrites the InsetExternal read and write methods to in/output the new format elegantly; Adds a lyx2lyx conversion routine and; bumps the LyX format to 224.
Aside to John: my attempts to make an elegant External dialog in Qt have failed I'm afraid. It will need some massaging. Any problems with me applying this? -- Angus
external.diff.gz
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