[Changeset] Add symvar function

[John W. Eaton]

On  5-May-2008, David Bateman wrote:

| 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.

I applied this patch.  Somehow the Makefile.in changes were not in
your changeset?

Thanks,

jwe