[multi-db] Added builder property to creation module of all backends. Currently for all backends builder is a django.db.backends.ansi.sql.SchemaBuilder.

git-svn-id: http://code.djangoproject.com/svn/django/branches/multiple-db-support@3265 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/ado_mssql/creation.py

@@ -1,3 +1,6 @@
+from django.db.backends.ansi import sql
+builder = sql.SchemaBuilder()
+
 DATA_TYPES = {
     'AutoField':         'int IDENTITY (1, 1)',
     'BooleanField':      'bit',

django/db/backends/mysql/creation.py

@@ -1,3 +1,6 @@
+from django.db.backends.ansi import sql
+builder = sql.SchemaBuilder()
+
 # This dictionary maps Field objects to their associated MySQL column
 # types, as strings. Column-type strings can contain format strings; they'll
 # be interpolated against the values of Field.__dict__ before being output.

django/db/backends/oracle/creation.py

@@ -1,3 +1,6 @@
+from django.db.backends.ansi import sql
+builder = sql.SchemaBuilder()
+
 DATA_TYPES = {
     'AutoField':         'number(38)',
     'BooleanField':      'number(1)',

django/db/backends/postgresql/creation.py

@@ -1,3 +1,6 @@
+from django.db.backends.ansi import sql
+builder = sql.SchemaBuilder()
+
 # This dictionary maps Field objects to their associated PostgreSQL column
 # types, as strings. Column-type strings can contain format strings; they'll
 # be interpolated against the values of Field.__dict__ before being output.

django/db/backends/sqlite3/creation.py

@@ -1,3 +1,6 @@
+from django.db.backends.ansi import sql
+builder = sql.SchemaBuilder()
+
 # SQLite doesn't actually support most of these types, but it "does the right
 # thing" given more verbose field definitions, so leave them as is so that
 # schema inspection is more useful.