Some initial diagnosis of memtemp89.C [2nd try]

[Kriang Lerdsuwanakij]

I submitted two patches a few monts ago that fix several template
template parameter bugs.  They're archived at
	egcs.cygnus.com/ml/gcc-patches/1999-03/msg00000.html
and
	egcs.cygnus.com/ml/gcc-pathces/1999-04/msg00341.html

There was a change in the first patch that fixes the  
lookup_template_class() function call inside tsubst() you are
investigating.  The name Q::X should be lookup only once during the
parsing stage.  And there should be no name lookup inside
lookup_template_class() during template argument substitution stage.

I'm not sure this will completely fix the memtemp89.C problem.

--Kriang