Fix compiletests

Author: weiznich

diesel_compile_tests/tests/compile-fail/table_invalid_syntax_2.rs

@@ -3,6 +3,6 @@
 table! {
      some wrong syntax
 }
-//~^ ERROR environment variable `invalid table! syntax` not defined
+// error-pattern: invalid table! syntax
 
 fn main() {}

diesel_compile_tests/tests/compile-fail/table_invalid_syntax_3.rs

@@ -0,0 +1,11 @@
+#[macro_use] extern crate diesel;
+
+table! {
+     #[foobar]
+     //~^ ERROR expected ident, found #
+     posts {
+         id -> Integer,
+     }
+}
+
+fn main() {}