Fix Column.validateConvertUpdateSequence() for ENUM data type

Copy also SRID in ValueGeometry.getGeometry()

Preserve type names in more places especially for UUID

Fix INFORMATION_SCHEMA.CONSTRAINTS.CONSTRAINT_TYPE regression

Fix MVSecondaryIndex.convertToKey() for ENUM data type

Ignore constant default values of columns in gathering of generated keys

Fix some compiler warnings and improve assert*() methods

Generate shorter queries in JdbcDatabaseMetaData.getTables() and remove some dead code

Fix more issues with range table and improve its documentation

# Conflicts:
#	h2/src/main/org/h2/engine/ConnectionInfo.java