From Axel: Make use of double's full 10^16 precision when concatenating to a TString. Fixes Savannah #62965.
From Axel:
Make use of double's full 10^16 precision when concatenating to a TString.
Fixes Savannah #62965.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@32426 27541ba8-7e3a-0410-8455-c3a389f83636

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