Change ALTER TABLE RENAME TO signature

This is mainly important for migrations, so let's take the old table
name as a string and pass in a query as the new table, instead.

Signed-off-by: Stephen Celis <[email protected]>

Author: stephencelis

SQLite Tests/SchemaTests.swift

@@ -264,7 +264,8 @@ class SchemaTests: XCTestCase {
 
     func test_alterTable_renamesTable() {
         CreateUsersTable(db)
-        ExpectExecution(db, "ALTER TABLE \"users\" RENAME TO \"people\"", db.rename(table: users, to: "people") )
+        let people = db["people"]
+        ExpectExecution(db, "ALTER TABLE \"users\" RENAME TO \"people\"", db.rename(table: "users", to: people) )
     }
 
     func test_alterTable_addsNotNullColumn() {

SQLite/Schema.swift

@@ -43,8 +43,8 @@ public extension Database {
         return run("\(create) AS \(expression.SQL)", expression.bindings)
     }
 
-    public func rename(#table: Query, to tableName: String) -> Statement {
-        return run("ALTER TABLE \(table.tableName.unaliased.SQL) RENAME TO \(quote(identifier: tableName))")
+    public func rename(table tableName: String, to table: Query) -> Statement {
+        return run("ALTER TABLE \(quote(identifier: tableName)) RENAME TO \(table.tableName.unaliased.SQL)")
     }
 
     public func alter<V: Value>(