Fixes #502

Changed Column Constant getters

Changes:
1) getConstantName() -> getFQConstantName() and returns
[TableName]Map::COL_COLUMN_NAME
2) getConstantColumnName() -> getConstantName() and returns
COL_COLUMN_NAME
3) added getUppercasedName() and returns COLUMN_NAME
Merge pull request #516 from gossi/constants-patch

Fixes #502