Support SPEL expressions inside SQL queries

[BoykoAlex]

Spring Data Query annotations can have SQL if nativeQuery=true is present.
This embedded SQL can have embedded SPEL expressions. Syntax highlighting and validation for such SQL queries isn't working yet (it does for HQL and JPQL though)

[BoykoAlex]

MySQL and PostgreSQL is supported with parameters including SPEL. Syntax highlighting and validation. If mysql-connector-* is on the classpath then MySQL support is in action if postgresql is on the classpath then PostgreSQL support is working. If it is nether MySQL nor PostgreSQL then only syntax highlighting for MySQL is active for native queries.
(See 4361299 and fcbd052)