Pull ACLs into their own struct

Rakefile

@@ -82,13 +82,22 @@ file check("client") =>
   build/parse.o
   build/client.o
   build/serve.o 
+  build/acl.o
   build/ioutil.o 
   build/util.o} do |t|
   gcc_link t.name, t.prerequisites + [LIBCHECK]
 end
 
+file check("acl") =>
+%w{tests/check_acl.c
+  build/parse.o
+  build/acl.o
+  build/util.o} do |t| 
+  gcc_link t.name, t.prerequisites + [LIBCHECK]
+end
 
-(TEST_MODULES-["client"]).each do |m|
+
+(TEST_MODULES- %w{acl client}).each do |m|
   deps = ["tests/check_#{m}.c", "build/ioutil.o", "build/util.o"]
   maybe_obj_name = "build/#{m}.o"