[cmake] Add COPY_TO_BUILDDIR to ROOT_ADD_GTEST.
[cmake] Add COPY_TO_BUILDDIR to ROOT_ADD_GTEST.

karies/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,karies/root,olifre/root,olifre/root,olifre/root,olifre/root,karies/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,root-mirror/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,olifre/root,olifre/root,karies/root,root-mirror/root,root-mirror/root