Merge branch 'master' into objectPosition

src/adql/query/SelectItem.java

src/adql/query/TextPosition.java

src/adql/query/constraint/Between.java

src/adql/query/constraint/Comparison.java

src/adql/query/constraint/Exists.java

src/adql/query/constraint/In.java

src/adql/query/constraint/IsNull.java

src/adql/query/constraint/NotConstraint.java

src/adql/query/from/ADQLJoin.java

src/adql/query/from/FromContent.java

src/adql/query/operand/ADQLColumn.java

src/adql/query/operand/ADQLOperand.java

src/adql/query/operand/Concatenation.java

src/adql/query/operand/NegativeOperand.java

src/adql/query/operand/NumericConstant.java

src/adql/query/operand/Operation.java

src/adql/query/operand/StringConstant.java

src/adql/query/operand/UnknownType.java

src/adql/query/operand/WrappedOperand.java

src/adql/query/operand/function/ADQLFunction.java