merge from agentzh's v0.13rc2

merge from v0.12rc1, and add some modifications by ywb

reindexed the test serial numbers.

releng work for the v0.11 release.

releng work for the v0.10 release.

fixed a bug in the previous commit: we should copy the whole content …

…of the incoming bufs from the request body, not just ->pos and ->last.

updated the wiki page and README.