tests/test-debian-packages.t

wireproto: separate commands tables for version 1 and 2 commands

We can't easily reuse existing command handlers for version 2
commands because the response types will be different. e.g. many
commands return nodes encoded as hex. Our new wire protocol is
binary safe, so we'll wish to encode nodes as binary.

We /could/ teach each command handler to look at the protocol
handler and change behavior based on the version in use. However,
this would make logic a bit unwieldy over time and would make
it harder to design a unified protocol handler interface. I think
it's better to create a clean break between version 1 and version 2
of commands on the server.

What I imagine happening is we will have separate @wireprotocommand
functions for each protocol generation. Those functions will parse the
request, dispatch to a common function to process it, then generate
the response in its own, transport-specific manner.

This commit establishes a separate table for tracking version 1
commands from version 2 commands. The HTTP server pieces have been
updated to use this new table.

Most commands are marked as both version 1 and version 2, so there is
little practical impact to this change.

A side-effect of this change is we now rely on transport registration
in wireprototypes.TRANSPORTS and certain properties of the protocol
interface. So a test had to be updated to conform.

Differential Revision: https://phab.mercurial-scm.org/D2982

#require test-repo slow debhelper debdeps

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ testrepohgenv

Ensure debuild doesn't run the testsuite, as that could get silly.
  $ DEB_BUILD_OPTIONS=nocheck
  $ export DEB_BUILD_OPTIONS
  $ OUTPUTDIR=`pwd`
  $ export OUTPUTDIR

  $ cd "$TESTDIR"/..
  $ make deb > $OUTPUTDIR/build.log 2>&1
  $ cd $OUTPUTDIR
  $ ls *.deb | grep -v 'dbg'
  mercurial-common_*.deb (glob)
  mercurial_*.deb (glob)
main deb should have .so but no .py
  $ dpkg --contents mercurial_*.deb | egrep '(localrepo|parsers)'
  * ./usr/lib/python2.7/dist-packages/mercurial/cext/parsers*.so (glob)
mercurial-common should have py but no .so or pyc
  $ dpkg --contents mercurial-common_*.deb | egrep '(localrepo|parsers.*so)'
  * ./usr/lib/python2.7/dist-packages/mercurial/localrepo.py (glob)
zsh completions should be in the common package
  $ dpkg --contents mercurial-common_*.deb | egrep 'zsh.*[^/]$'
  * ./usr/share/zsh/vendor-completions/_hg (glob)
chg should be installed alongside hg, in the 'mercurial' package
  $ dpkg --contents mercurial_*.deb | egrep 'chg$'
  * ./usr/bin/chg (glob)
chg should come with a man page
  $ dpkg --contents mercurial_*.deb | egrep 'man.*chg'
  * ./usr/share/man/man1/chg.1.gz (glob)