RESTEASY-1066: 1) DefaultTextPlain and StringTextStar default to UTF-8;
2) added charset tests to jaxb.
RESTEASY-1066: Backing out previous commit.
Merge branch 'Branch_2_3' of github.com:resteasy/Resteasy into Branch_2_3_new
RESTEASY-1066: Changed DefaultTextPlain, StringTextStar, and JAXB
providers to default to UTF-8.
Merge pull request #551 from ronsigal/Branch_2_3_new

Branch 2 3 new