Update 5201 fails under PostGres

Issue Summary

When running upgrade script, the following error :

# warning: pg_query(): Query failed: ERROR: syntax error at or near "(" at character 44 in /srv/www/htdocs/drupal/includes/database.pgsql.inc on line 125.
# user warning: query: ALTER TABLE webform_component ADD email int(1) UNSIGNED NOT NULL DEFAULT '0' in /srv/www/htdocs/drupal/includes/database.pgsql.inc on line 144.
# warning: pg_query(): Query failed: ERROR: column "email" of relation "webform_component" does not exist at character 30 in /srv/www/htdocs/drupal/includes/database.pgsql.inc on line 125.
# user warning: query: UPDATE webform_component SET email = 1 in /srv/www/htdocs/drupal/includes/database.pgsql.inc on line 144.

UNSIGNED is not a keyword in postgres and a size is not accepted for an int datatype when creating a table.

So, changing line 697 of webform.install from
$ret[] = update_sql("ALTER TABLE {webform_component} ADD email int(1) UNSIGNED NOT NULL DEFAULT '0'");

to

$ret[] = update_sql("ALTER TABLE {webform_component} ADD email int NOT NULL DEFAULT '0'");

fixed the problem for postgres. There will have to be separate functions or something for mysql vs postgres