* NEWS (2.5): Document it.
* tests/java.at (_AT_DATA_JAVA_CALC_Y): To one of the yyerror
invocations, pass a location that spans multiple tokens. Change
yyerror to report all of a location rather than just the begin
position. Extend yylex and Position to count tokens on a line.
Remove getHashCode as it's unused. Update all expected output.
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