Uli Schlachter authored Sep 19, 2013 and Michael Stapelberg committed Sep 20, 2013

RENDER's CreateCursor request was added in version 0.5 and CreateAnimCursor was
added in version 0.8. Hence, just having the RENDER extension is not enough and
we need to check the exact version that the server provides.

Signed-off-by: Uli Schlachter <psychon@znc.in>