do not copy sources and javadocs into jruby-complete.jar
fixes #1989 at the right place this time
do not run integration-tests per default
update final-name of jruby-jars.gem
first step to get build of master and jruby-1_7 in sync again
use snapshot jruby-openssl gem
fix build to use snapshot gems from oss.sonatype.org
fix enums to return nil on unknown symbol
sync/update ffi specs
fix failing variadic spec

updates variadic invoker to match MRI
variadic functions may now take enum arguments