Set global logging configuration from a Paste config.

Since gunicorn.app.pasterapp.{run, paste_server} are deprecated,
there is no way to configure the logging module from a Paste config
file.
Use pip instead of easy_install
Merge pull request #813 from methane/patch-1

Use pip instead of easy_install
Fix major issue with threaded worker keepalive

The keepalive queue management is fixed to not pop extra connections
incorrectly.

Close #816
Merge pull request #817 from benoitc/816-gthread-keepalive-pop

Fix major issue with threaded worker keepalive
Support UNIX sockets in gaiohttp worker
Merge pull request #823 from benoitc/gaiohttp_unixsock

Support UNIX sockets in gaiohttp worker
We need at least one argument for the WSGIApplication fix #815
support tornado 4.0

fix #771
fix django ex
doc: let django user know about the DJANGO_SETTINGS_MODULE env

improve the documentation to show the usage of the DJANGO_SETTINGS_MODULE
environment variable. related to #802.
Merge pull request #809 from berkerpeksag/set-logging-paste

Set global logging configuration from a Paste config.
example: edit paste example to allow the display of gunicorn logs
Merge pull request #826 from benoitc/fix/771

support tornado 4.0
fix 19.1 changelogs
add missing people to THANKS
you probably know it but we are in 2014
Typo

s/suite/suit/
Merge pull request #828 from danielquinn/patch-1

Typo
Move logging to parent log function