evas: only check references ifndef EVAS_CSERVE
evas: only check references ifndef EVAS_CSERVE

We only check the value of references if EVAS_CSERVE isn't defined, so
no need to define it or assign it if EVAS_CSERVE isn't defined.

git-svn-id: 24a995eca3b83137dd7eab3408044d7832e202f7@67304 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

antognolli/Evas,antognolli/Evas,antognolli/Evas,antognolli/Evas