Install instructions + dejagnu suggestion

["Lorenzo M. Catucci" <lorenzo at argon dot roma2 dot infn dot it>]

Now, at first the egcs thing: I think the instructions should contain some
hint to the 
	--program-prefix
configure option, which could be useful to those who would like to have
both GNU gcc and egcs available (and was noted in some message in the
mailing list).

Then, even though I'm not sure it belongs here, the dejagnu
question/suggestion: in as much as I can see, deja runs at all from expect
scripts. Shouldn't then be possible to do some tests to see if expect and
tcl/tk have been installed on the system before the build? This comes from
bad results I got from a make check inside dejagnu build directory in a
debian system where I had both tcl/tk installed, but unrecognized... I
mean: trying to call tclsh and expect (or which tclsh, expect) could let
the install run without recompiling both interpreters.

Yours,

l.