wireproto: move wireproto capabilities computation in a subfunction
It will help people that need to add capabilities (in a more subtle was that
just adding some to the list) in multiple way:
1. This function returns a list, not a string. Making it easier to look at,
extend or alter the content.
2. The original capabilities function will be store in the dictionary of wire
protocol command. So extension that wrap this function also need to update
the dictionary entry.
Both wrapping and update of the dictionary entry are needed because the
`hello` wire protocol use the function itself. This is specifically sneaky for
extension writer as ssh use the `hello` command while http use the
`capabilities` command.
With this new `_capabilities` function there is one and only one obvious
place to wrap when needed.
### --- User interface
[ui]
### show changed files and be a bit more verbose if True
# verbose = True
### username data to appear in comits
### it usually takes the form: Joe User <joe.user@host.com>
# username = Joe User <j.user@example.com>
### --- Extensions
[extensions]
### each extension has its own 'extension_name=path' line
### the default python library path is used when path is left blank
### the hgext dir is used when 'hgext.extension_name=' is written
### acl - Access control lists
### hg help acl
# hgext.acl =
### bisect - binary search changesets to detect bugs
### hg help bisect
# hgext.hbisect =
### bugzilla - update bugzilla bugs when changesets mention them
### hg help bugzilla
# hgext.bugzilla =
### extdiff - Use external diff application instead of builtin one
# hgext.extdiff =
### gpg - GPG checks and signing
### hg help gpg
# hgext.gpg =
### hgk - GUI repository browser
### hg help view
# hgext.hgk =
### strip - Remove changesets and their descendents from history
### hg help strip
# hgext.strip =
### notify - Template driven e-mail notifications
### hg help notify
# hgext.notify =
### patchbomb - send changesets as a series of patch emails
### hg help email
# hgext.patchbomb =
### churn - create a graph showing who changed the most lines
### hg help churn
# hgext.churn = /home/user/hg/hg/contrib/churn.py
### eol - automatic management of line endings
# hgext.eol =
### --- hgk additional configuration
[hgk]
### set executable path
# path = /home/user/hg/hg/contrib/hgk
### --- Hook to Mercurial actions - See hgrc man page for avaliable hooks
[hooks]
### Example notify hooks (load hgext.notify extension before use)
# incoming.notify = python:hgext.notify.hook
# changegroup.notify = python:hgext.notify.hook
### Email configuration for the notify and patchbomb extensions
[email]
### Your email address
# from = user@example.com
### Method to send email - smtp or /usr/sbin/sendmail or other program name
# method = smtp
### smtp server to send email to
[smtp]
# host = mail
# port = 25
# tls = false
# username = user
# password = blivet
# local_hostname = myhost
### --- Email notification hook for server
[notify]
### multiple sources can be specified as a whitespace or comma separated list
# sources = serve push pull bundle
### set this to False when you're ready for mail to start sending
# test = True
### path to config file with names of subscribers
# config = /path/to/subscription/file