[gentoo-java] JAVA_ANT_IGNORE_SYSTEM_CLASSES

[Petteri Räty]

You can now set JAVA_ANT_IGNORE_SYSTEM_CLASSES in ebuilds to
automatically make available tasks ignore classes in ant classpath. This
is usually useful to fix code that builds tests based on junti being
available. The variable should only be used if there is no src_unpack as
you can just call java-ant_ignore-system-classes in src_unpack if it
exists. The ant-core automatic dep is also here but it is disable
because ant-core is not modified yet to disable the dep.

Regards,
Petteri