Don't assume All LDP Servers will respond with turtle (as with pull#193)
Allow LDP Servers to include charset parameter in Turtle media type (as with pull#194)
Merge pull request #201 from jamesrdf/testPutRequiresIfMatch

Accept Turtle Media Type
fix setup and teardown methods

- Only set static variables from LdpTest setup. Setup is only called
  once even when several classes inherit from LdpTest.
- Change setup and tear down method names so we don't accidentally
  override them in subclasses.

See https://github.com/cbeust/testng/issues/313

Fixes #192