[gentoo-java] new proposed enhancement to java-pkg_jarfrom()

[Vlastimil Babka]

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Attached a patch, will commit if no-one objects.

Originally I just wanted to fix a bug that in src_test() it would shift
parameters (i.e. name of package) if the first parameter wasn't
- --build-only. Encountered this while improving commons-cli ebuild. Then
I decided to improve a bit more:

Fixes a theoretical situation where --build-only and --with-dependencies
would be both specified, but in the wrong order. Now there's a general
loop for resolving --* parameters.
Adds a new parameter: '--into $dir' which will symlink the jars into the
$dir instead of '.'
Consider this difference (again, commons-cli):

before the change:
src_test() {
	cd lib
	java-pkg_jar-from junit
	cd ..
        eant test
}


after the change:
src_test() {
	java-pkg_jar-from --into lib junit
        eant test
}

The directory must exist, but maybe it could be improved even more to
mkdir it if it doesn't?

BTW, I think deferring the test-specific jar-from/getjars calls until
src_test() is good idea, because you don't need to prefix them with "use
test &&", specify "--build-only" and you don't need to test package
twice (without and with test) to ensure those deps are really needed
only for testing.
- --
Vlastimil Babka (Caster)
Gentoo/Java
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