Currently the XML submodules communicate using
semistable APIs via impl deps. The implementation
version in dev builds is taken from the build
number. This makes it effectively impossible to
properly publish the ant/grammar (Ant Code
Completion) module on daily alpha AU, since the
impl version will rarely match what is available
from xml/core.

Please use the newly introduced
OpenIDE-Module-Build-Version attribute (see URL)
to hold the actual ${buildnumber}, and for
OpenIDE-Module-Implementation-Version in xml/core
(etc.) use a proper token of your choice: i.e. use
xml/spec-vers.properties for
${xml.implementation.version} and update it as
needed when impl classes might have been changed
incompatibly. (When updating this, you also need
to increment spec versions in all affected
modules, to ensure that dev alpha AU has current
versions of their NBMs.)

Please do this in the trunk, not only in a release
branch (though the release impl version would
probably be different from anything in trunk). It
takes only a few seconds to change the impl
version if any incompatible change might have been
made in the XML submodules such as xml/core, so
this could hardly be a burden. No changes seem to
be happening in this area anyway; I don't remember
having *ever* had to make any changes in the
ant/grammar module to make it work again after a
change in xml/core.