use (hopefully) only java 1.3 methods to detect encoding compatibility
use (hopefully) only java 1.3 methods to detect encoding compatibility

git-svn-id: 859f4847dd4a5441cd88266ccb9b6c14ce89f0a7@133 8a2d9b43-3d30-0410-9efd-cf3042b7273d

jnorthrup/nekohtml,krosenvold/nekohtml,jvshahid/nekohtml,jvshahid/nekohtml