[Rails3] Add the Arel SQLServerCompiler to the gem spec.

Author: metaskills

activerecord-sqlserver-adapter.gemspec

@@ -22,7 +22,8 @@ Gem::Specification.new do |s|
     "lib/active_record/connection_adapters/sqlserver/database_statements.rb",
     "lib/active_record/connection_adapters/sqlserver/errors.rb",
     "lib/active_record/connection_adapters/sqlserver/schema_statements.rb",
-    "lib/active_record/connection_adapters/sqlserver/quoting.rb" ]
+    "lib/active_record/connection_adapters/sqlserver/quoting.rb",
+    "lib/arel/engines/sql/compilers/sqlserver_compiler.rb" ]
   s.test_files = [
     "test/cases/aaaa_create_tables_test_sqlserver.rb",
     "test/cases/adapter_test_sqlserver.rb",