[Changeset] Add symvar function

[David Bateman]

Here's another low hanging fruit from the missing matlab core functions.
The Finline changes I sent are needed to make this work correctly for
the constants Inf, etc, as this function is just "argnames (inline (s))"
since that can do all the work rather than reimplementing the function
as a regexp.

D.

-- 
David Bateman                                David.Bateman at motorola.com
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