merge from 2.0-ongoing @ 3581

git-svn-id: svn://localhost/ardour2/branches/3.0@3711 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/surfaces/control_protocol/SConscript

@@ -6,7 +6,7 @@ import glob
 
 Import('env final_prefix install_prefix final_config_prefix libraries i18n')
 
-cp = env.Copy()
+cp = env.Clone()
 
 #
 # this defines the version number of libardour_cp
@@ -38,7 +38,6 @@ cp.Merge ([
     libraries['pbd'],
     libraries['midi++2'],
     libraries['xml'],
-    libraries['usb'],
     libraries['glib2'],
     libraries['glibmm2']
 	])