Move general core lib fetch to rtl top Manifest in /spec/rtl

hdl/gn4124core/rtl/Manifest.py

@@ -6,8 +6,6 @@ files = ["dma_controller.vhd",
          "p2l_dma_master.vhd",
          "wbmaster32.vhd"]
 
-modules = { "local" : "spartan6",
-            "git" : "git://ohwr.org/hdl-core-lib/general-cores.git" }
+modules = { "local" : "spartan6"}
 
-fetchto = "../ip_cores"
 

hdl/spec/rtl/Manifest.py

 files = ["spec_gn4124_test.vhd"]
 
 modules = {"local" : ["../../common/rtl",
-                      "../../gn4124core/rtl",
-                      "../../gn4124core/ip_cores"]}
+                      "../../gn4124core/rtl"],
+           "git" : "git://ohwr.org/hdl-core-lib/general-cores.git"}
+
+fetchto = "../ip_cores"