Provide install,uninstall and check Makefile rules for java components

[strk]

We need the following Makefile rules for java components:

• all - builds what needs to be built...
• clean - removes built files
• distclean - what clean does plus removes whatever was generated by ./configure
• check - runs regress tests

I understand the new preferred build tool for java components is maven, but even if so we want to wrap maven calls into Makefile rules.

[delawen]

I attached a patch to provide ant rules to execute maven.

[strk]

So we need both ant _and_ maven ? Our final goal is to have Makefile rules here...

[delawen]

No, ant downloads first all jars required.

[delawen]

And on "distclean" removes all jars downloaded leaving the environment as was before building it.

[strk]

I don't really like the idea of a build process downloading binaries from the net. It's kind of nice-to-have support for those choosing to do it but I'd rather rely on packages installed by other means (package managers and so on).

In any case I've played a bit with it and found that the download keeps happening on every call: ant build; ant check; ant build; all of them re-download something.

Also, I'm not sure 'ant check' is really running checks, while I see a few "test" targets (offline, online) which don't seem to work.

[strk]

I've committed your new build.xml in r9236 together with new Makefile rules. Still missing: install/uninstall rules and a "check" rule actually doing something.