improved sqlserver 'doModifyLimitQuery' select-from pattern
added testcase for sqlserver 'doModifyLimitQuery' select-from pattern
to test preg_replace performance
Fix escaping of column name for specific alter table case

When changing the length of a field, the column name needs to be escaped
properly.
sqlserver test 'testModifyLimitQueryWithExtraLongQuery' is now verified
with assertEquals
Merge pull request #622 from jaylinski/master

improved sqlserver 'doModifyLimitQuery' select-from pattern
Travis builds should not allow failures on mysql anymore
Added unit test for changing column lengths

Unit tests currently only cover SQLite, MySQL and PostgreSQL.

Tests for other platforms have been marked as incomplete.
Merge pull request #627 from PVince81/pgsql-altertable-keyword

Fix escaping of column name for specific alter table case
Merge pull request #1 from doctrine/master

Update from master