add gradle build

git-svn-id: https://svn/IT/az/groovy@23645 99cadc30-3bf9-11df-9bc1-510916f65ae8
remove dublicate dependencies

git-svn-id: https://svn/IT/az/groovy@23646 99cadc30-3bf9-11df-9bc1-510916f65ae8
add gradle/ant build

git-svn-id: https://svn/IT/az/groovy@23647 99cadc30-3bf9-11df-9bc1-510916f65ae8
get dependencies from maven central

git-svn-id: https://svn/IT/az/groovy@23648 99cadc30-3bf9-11df-9bc1-510916f65ae8
Merge remote-tracking branch 'remotes/git-svn'