gotwebd: abort tree and blob as well

gotwebd: abort blame if the client disconnect midway thru Without setting err when the callback fails we continue the blame machinery.

make new log message modication check more robust; fixes regress fallout ok jamsek

garbage-collect redundant read_logmsg() parameter As identified and suggested by stsp, with the previous commit, 'strip_comments' is now always set thus no longer needed. ok stsp@

got: use timestamp and emptiness to validate log message As suggested by naddy: consider commit log messages valid provided the temp file time stamp has changed and the file is not empty. This heuristic provides the desired behaviour (i.e., reusing cherrypicked/backed-out log messages) that's currently provided but is simpler to grok. Improved by and ok stsp@

convert two files to utf8 ok stsp

add a TODO item for gotadmin pack command

open_blob: copy whole id not just the sha1

remove recv_disconnect() from repo_write.c; missed in previous commit

do not expect to see a DISCONNECT message in repo processes The parent no longer sends this message. Perform related cleanup in the shutdown path instead. ok op@

add functions to extract object ids from fileindex entries ok stsp

fix gotd segfault in libevent while disconnecting clients Sending a DISCONNECT message to the repo process and then killing it and freeing its structure won't work. The message ends up on internal libevent queues and will soon crash because we have freed the memory for the event structre. Sending that message is a leftover from the times when the repo procs were persistent.

rm unused boolean grammar. ok stsp@

make edits made to comments count as a log message modification This supports use of cherrypick/backout without requiring the user to modify the log message of the original commit. ok jamsek, op

fix gotd and gotsh usage() function declaration "function declaration isn't a prototype" should fix the error seen by tracey@ on sparc64