Fix irk for Python 3 and Unicode input

There were several issues:
- json.dumps does not have an encoding parameter in Python 3.
- Forcing the json.dumps encoding to ASCII prevents any non-ASCII
  character in the message. To avoid having non-ASCII characters in the
  *dump*, the only needed parameter is ensure_ascii=True which is the
  default.
- To coerce a str to bytes in Python 3, an encoding must be provided
  even when it only contains ASCII characters.
  The solution is to use the encode() method which is available in both
  versions.

See merge request !7

There were several issues:
- json.dumps does not have an encoding parameter in Python 3.
- Forcing the json.dumps encoding to ASCII prevents any non-ASCII
  character in the message. To avoid having non-ASCII characters in the
  *dump*, the only needed parameter is ensure_ascii=True which is the
  default.
- To coerce a str to bytes in Python 3, an encoding must be provided
  even when it only contains ASCII characters.
  The solution is to use the encode() method which is available in both
  versions.

Use abbreviated hash for short format

Use git log's '%h' to get the abbreviated hash for the commit.

Fixes issue #7 

See merge request !6

Don't hang when confronted with urls which require authentication

When faced with an url that requires authentication, irkerhook currently blows up rather messily, because urllib.urlopen attempts to prompt the user for a password, which unsurprisingly fails, leading to the hook failing completely with an EOFError .

This changes irkerhook.py to use urllib2 here, so this failure can be detected more easily and the a more sensible answer can be returned.

The debian package currently uses the more heavy-handed "0004-webview.patch" to solve the same problem - http://anonscm.debian.org/viewvc/python-apps/packages/irker/trunk/debian/patches/0004-webview.patch?revision=12689&view=markup

See merge request !5

Reverts some 2to3 botches.

corrected typo in -i option description

s/sedond/second/

See merge request !4

Fix confusing / incorrect instruction in install.txt

install.txt suggests to use options -d 1 or 2 to control logging output,
when in fact irkerd uses the syslog levels. Changed to say -d
info / debug, so we don't get an error when doing as the install
instructions suggest.

See merge request !3

Use getaddrinfo to connect to IRC

This allows irkerd to connect to e.g. IPv6-enabled IRC servers.

See merge request !2

It suggests to use options -d 1 or 2 to control logging output,
when in fact irkerd uses the syslog levels. Changed to say -d
info / debug, so we don't get an error when doing as the install
instructions suggest.

This allows irkerd to connect to e.g. IPv6-enabled IRC servers.

Fix logdev checking on Debian Jessie

Irker expects only one of (`/dev/log`, `/var/run/syslog`,
`/var/run/log`) to exist, however on Debian Jessie, we’ve got
`/var/run/log` (which is a directory), too.

See merge request !1

Irker expects only one of ('/dev/log', '/var/run/syslog',
'/var/run/log') to exist, however on Debian Jessie, we’ve got
/var/run/log (which is a directory), too.