localrepo: remove push_{unbundle,addchangegroup}(), factor it inside push()

wireproto: refactor list of nodeid encoding / decoding

ssh: drop some old imports

protocol: move hgweb protocol support back into protocol.py - introduce iscmd - simplify error handling - remove unneeded imports

protocol: unify server-side capabilities functions

protocol: unify unbundle on the server side

protocol: unify client unbundle support - introduce _callpush helper - factor out differences in result handling into helpers - unify

protocol: unify client changegroup methods

protocol: convert some ssh abort calls

protocol: clean up call-like functions in http and ssh clients

protocol: unify stream_out client code

protocol: unify basic http client requests

protocol: move basic ssh client commands to wirerepository

protocol: unify stream_out command

protocol: unify changegroup commands - add sendchangegroup protocol helpers - handle commands with None results - move changegroup commands into wireproto.py

protocol: add proto to method prototypes

protocol: use new wireproto infrastructure in ssh - add protocol helper - insert wireproto into dispatcher - drop duplicate functions from hgweb implementation

protocol: introduce wireproto.py - add a protocol-independent dispatcher - move most of the basic commands from sshserver to wireproto - dispatch through wireproto first

protocol: move most ssh responses to returns

protocol: add ssh getargs - introduce getargs - make getarg a helper function - update users

discovery: remove duplication for new remote head discovery

discovery: better coding style

discovery: simplify findoutgoing(), the updated_head stuff wasn't used

mq: evaluate --user before invoking editor with -e (issue2289)

Abort: add a hint argument, printed in the next line inside parenthesis discovery was using a custom made message for this purpose push now returns -1 after aborting, instead of 1 previously

discovery: clarify comment

Merge with stable

subrepo: docstrings

gendoc: remove call to callable for py3k compatibility

check-code: added check for reduce usage