These objects are created by turning on replication and they have column types (sysname, xml) that are not supported by Doctrine. 

According to Microsoft's support, these are "'pseudo-system' object[s]" that appear in the User Table type instead of the System Table type.

https://social.msdn.microsoft.com/Forums/sqlserver/en-US/135ec547-2214-4da3-bd42-5c458759e144/sysobjectscategory

This reverts commit 5a46f577.

[DBAL-555] replace a bunch of occurances of $diff->name and $diff->newName with quoted identifier version.

Apperently the doModifyLimitQuery function does not only cover SQL
generated by ORM (Makes sense to use DBAL as seperate component). Therefor
it can happen that a column name does not include the table and so the old
logic was valid anyway. (line 867-869)

Fixed the unit tests to use real column names instead of aliases.

1. combine the regexes into one. The only thing that needs to be captured
is the alias. Used a non-capturing group for "AS " to avoid confusion and
have cleaner regex. It tries to match "Table.Column Alias" or
"Table.Column AS Alias". (line 861)
2. No fallback on line 865 like "$column['table'] . '.' .
$column['column']" this wouldn't make sense as this can not be possible
when it's a wrapped query. Better not insert some random SQL that's gonna
confuse the hell out of everybody.
3. Removed "($column['hasTable'] ? $column['table']  . '.' : '') .
$column['column']" because the original regex always tries to match the
table name. Therefor hasTable will always be true or the entire function
fails anyway. (this references line 868 now) (this was unit tested on
mysql, postgresql and sql server and did not increase errors/failures)

and takes inspiration from this PR https://github.com/doctrine/dbal/pull/374 which was written for this bug http://www.doctrine-project.org/jira/browse/DDC-2622

Put the responsibility to give the default schema name from CreateSchemaSqlCollector to the Platforms (abstract, sqlserver, postgresql)