util: add limit to amount filechunkiter will read

tidy up mtime patch of andrea, get back half of performance loss. this makes diff < 3% slower than before.

report correct mtime in the hg diff output

merge with crew

change log message creation when using 'hg import' if found cmdline is used else if found patch header is used else launch hgeditor

merge emacs changes.

merge with crew.

Emacs: follow the revision usage policy of "hg diff" command. This patche makes "parent" as default revision of diff command.

Emacs: change directory of output buffer to the root of the repository.

Emacs: use `default-directory' if `buffer-file-name' is null. This patch allows you to co-operate with Mercurial in dired buffer.

Emacs: use delete-region instead of kill-* functions. This patch eliminates `kill-line' which taints kill-ring, and `kill-entire-line' which is specific for XEmacs.

merge with crew

fix an undefined variable spotted by pychecker

fix unused variable warning from pychecker

replace os.stat with os.lstat in some where.

httprepo: make "http://user:pass@host/" urls work

httprepo: fix small bug in authentication.

merge with crew.

Update keepalive.py to current CVS version of urlgrabber. This fixes a bug where the output of test-bad-pull would differ between python 2.3 and 2.4. Also update the expected output of this test.

patchbomb does not handle email time stamp plattform independent

http: query server for capabilities

remove use of undefined variable.

merge with self.

extend network protocol to stop clients from locking servers now all repositories have capabilities slot, tuple with list of names. if 'unbundle' capability present, repo supports push where client does not need to lock server. repository classes that have unbundle capability also have unbundle method. implemented for ssh now, will be base for push over http. unbundle protocol acts this way. server tells client what heads it has during normal negotiate step. client starts unbundle by repeat server's heads back to it. if server has new heads, abort immediately. otherwise, transfer changes to server. once data transferred, server locks and checks heads again. if heads same, changes can be added. else someone else added heads, and server aborts. if client wants to force server to add heads, sends special heads list of 'force'.

test-bad-pull: fix change in error output.

sshrepo: fix bug in error formatting.

hgweb: split "verbs" into methods.

http client: support persistent connections. uses keepalive module from urlgrabber package. tested against "hg serve", cgi server, and through http proxy. used ethereal to verify that only one tcp connection used during entire "hg pull" sequence. if server supports keepalive, this makes latency of "hg pull" much lower.

http server: support persistent connections. only "hg serve" affected yet. http server running cgi script will not use persistent connections. support for fastcgi will help that. clients that support keepalive can use one tcp connection for all commands during clone and pull. this makes latency of binary search during pull much lower over wan. if server does not know content-length, it will force connection to close at end. right fix is to use chunked transfer-encoding but this is easier and does not hurt performance. only command that is affected is "changegroup" which is always last command during a pull.

merge with crew.