Work around Base.Test move to stdlib

Author: ararslan

test/runtests.jl

@@ -1,7 +1,12 @@
 # This file contains code that was formerly a part of Julia. License is MIT: http://julialang.org/license
 
 using SpecialFunctions
-using Base.Test
+
+if isdefined(Base, :Test) && !Base.isdeprecated(Base, :Test)
+    using Base.Test
+else
+    using Test
+end
 
 const SF = SpecialFunctions