More tests.
More tests.

* test/test_buckets.c
  (read_and_check_bucket): Moved, no changes.
  (readline_and_check_bucket): New helper function to test results of
   serf_bucket_readline.
  (test_simple_bucket_readline): Add extra tests for all simple scenario's.
                                 Found bug!
  (test_aggregate_buckets): Fix comment.

krime/serf,blueszhangsh/serf,muthusuba/serf,justinweb/serf,Manouchehri/serf,krime/serf,wzugang/serf,sworda/serf,justinweb/serf,sworda/serf,idomon/serf,Manouchehri/serf,muthusuba/serf,TommyU/serf,TommyU/serf,idomon/serf,justinweb/serf,sworda/serf,liuzongquan/serf,sworda/serf,wzugang/serf,liuzongquan/serf,TommyU/serf,wzugang/serf,idomon/serf,idomon/serf,liuzongquan/serf,TommyU/serf,wzugang/serf,blueszhangsh/serf,blueszhangsh/serf,muthusuba/serf,muthusuba/serf,krime/serf,blueszhangsh/serf,Manouchehri/serf,liuzongquan/serf,krime/serf,justinweb/serf,Manouchehri/serf