TextualDateFieldState changes not picked up

I am made some chagnes in a fork of github 6.7 to com.vaadin.shared.ui.datefield.TextualDateFieldState and com.vaadin.ui.DateField.  In eclipse everything compiles fine, both in the IDE and when running. ide.xml

But when I try to package by running ant from my main directory, DateField doesn't see my changes anymore:

 common.compile:
[javac] Compiling 1 source file to d:\code\git\vaadin\server\result\classes
[javac] warning: [options] bootstrap class path not set in conjunction with
-source 1.6
[javac] d:\code\git\vaadin\server\src\com\vaadin\ui\DateField.java:332: erro
r: cannot find symbol
[javac] computeDateRangeType(newStartDateList, getState(false).endRa
ngeList);
[javac] ^
[javac] symbol: variable endRangeList
[javac] location: class TextualDateFieldState

What am I missing here?
TIA!
Dave