ADD: a test case for issue 138

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1397 44dcfd11-89b7-3d55-2063-5c365055f77f
CHG: the NATURAL keyword will be recognized as JOIN type
FIX: issue 138

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1398 44dcfd11-89b7-3d55-2063-5c365055f77f
ADD: a test case for issue 136

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1400 44dcfd11-89b7-3d55-2063-5c365055f77f
CHG: the test case for issue 136 has been modified, it tests now multiple subqueries and the position calculator

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1401 44dcfd11-89b7-3d55-2063-5c365055f77f
ADD: a new type for the subquery factoring clause (WITH)

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1402 44dcfd11-89b7-3d55-2063-5c365055f77f
CHG: the new type SUBQUERY_FACTORING is a backtracking type.

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1403 44dcfd11-89b7-3d55-2063-5c365055f77f
ADD: a new processor for a WITH clause (Oracle, M$SQL), which defines subqueries for a following SELECT statement
FIX: issue 136

git-svn-id: https://php-sql-parser.googlecode.com/svn/trunk@1404 44dcfd11-89b7-3d55-2063-5c365055f77f