README: update for icedtea version 1.12.8
jamvm: add inherit pkgconfig
jamvm: update git version to ebd11bde0a97b57f0d18938c6b65468d3c932719

* remove annotations.patch, because it was fixed upstream
java-test-image: add jamvm, cacao and classpath
jamvm: update git url to sourceforge while berlios is gone