contrib/tcsh_completion

hgweb: be sure to drain request data even in early error conditions

Thanks to Mads Kiilerich with noticing this. The hg client can only read data
after all the sent data has been read, so we have to read all the request data
even if we're not going to do anything with it (in error conditions). This
is not easy to fix in the client, because we're using Python's httplib, which
is strictly stateful. Abstracted the draining into a separate method.

#
# tcsh completion for Mercurial
#
# This file has been auto-generated by tcsh_completion_build.sh for
# Mercurial Distributed SCM (version 325c07fd2ebd)
#
# Copyright (C) 2005 TK Soh.
#
# This is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#

complete hg \
  'n/--cwd/d/' 'n/-R/d/' 'n/--repository/d/' \
  'C/-/( -R --repository \
    --cwd \
    -y --noninteractive \
    -q --quiet \
    -v --verbose \
    --debug \
    --debugger \
    --traceback \
    --time \
    --profile \
    --version \
    -h --help)/' \
  'p/1/(add addremove annotate bundle cat \
    clone commit ci copy cp \
    debugancestor debugcheckstate debugconfig debugdata debugindex \
    debugindexdot debugrename debugstate debugwalk diff \
    export forget grep heads help \
    identify id import patch incoming \
    in init locate log history \
    manifest outgoing out parents paths \
    pull push rawcommit recover remove \
    rm rename mv revert root \
    serve status tag tags tip \
    unbundle undo update up checkout \
    co verify version)/'