Log Message:
Changes 1.8.3.4:
* The bisect log listed incorrect commits when bisection ends with
  only skipped ones.
* The test coverage framework was left broken for some time.
* The test suite for HTTP transport did not run with Apache 2.4.
* "git diff" used to fail when core.safecrlf is set and the working
  tree contents had mixed CRLF/LF line endings. Committing such a
  content must be prohibited, but "git diff" should help the user to
  locate and fix such problems without failing.