Merge pull request #65 from wzab/updates_from_cbm

Updates from cbm

hdl/wb_cdc/wb_cdc.core

+CAPI=2:
+
+name: :agwb:wb_cdc
+
+filesets:
+    rtl:
+        files:
+            - wb_cdc.vhd : {file_type: vhdlSource-93}        
+        logical_name: agwb
+
+    vivado_constr:
+        files:
+            - wb_cdc.tcl : {file_type : SDC}
+
+    tcl:
+        files:
+            - wb_cdc_wrapper.tcl : {file_type : tclSource}
+
+targets:
+    default:
+        filesets: [rtl, "tool_vivado? (vivado_constr)", tcl]
+

hdl/wb_cdc/wb_cdc_wrapper.tcl

+set_property SCOPED_TO_REF wb_cdc [get_files wb_cdc.tcl]
+set_property PROCESSING_ORDER "LATE" [get_files wb_cdc.tcl]
+set_property USED_IN_IMPLEMENTATION "1" [get_files wb_cdc.tcl]
+set_property USED_IN_SYNTHESIS "0" [get_files wb_cdc.tcl]