Improvements for JENA-656
1/ Headers in a defined order, highest q first
2/ Don't include q=1.0
3/ Always ask for something with \*/\*
4/ Encourage efficient forms


git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1579193 13f79535-47bb-0310-9956-ffa450edef68