#19 Typo in build.xml prevents CharsetProvider inclusion in jar

[Yury Hushchyn]

At line 65 of build.xml (2nd line in target "jar") an extra "s" is appended right after variable name:

<copy todir="${build.classes.dir}s"></copy>

This causes classes to be in "classes", and copying to "classess" (with two "s" at the end).

I guess this extra "s" shall be removed, so copied info goes where it should.