Complain about the invalid type in a declaration like:
Complain about the invalid type in a declaration like:

TH1D x;
THD1 y = x + x;

Previously we would silently create a variable named "THD1 y",
initialized with the results of the addition, which is not exactly
what the user expects.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@33078 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root