Python 2.4 is no longer supported

There are a very small number of users (if any) that still run Supervisor
on Python 2.4.  Supporting 2.4 has become difficult because programs like
tox and pip now require Python 2.5, which was released in September 2006.

.travis.yml

@@ -3,7 +3,6 @@
 
 language: python
 python:
-  - "2.4"
   - "2.5"
   - "2.6"
   - "2.7"

CHANGES.txt

@@ -20,6 +20,9 @@ Next release
 - Fixed a bug where supervisord would crash if the syslog handler was used
   and supervisord received SIGUSR2 (log reopen request).
 
+- Python 2.4 is no longer supported.  The last version that supported Python
+  2.4 is Supervisor 3.0b1.
+
 3.0b1 (2012-09-10)
 ------------------
 

README.rst

@@ -13,7 +13,7 @@ likely work fine on most UNIX systems.
 
 Supervisor will not run at all under any version of Windows.
 
-Supervisor is known to work with Python 2.4 or later but will not work
+Supervisor is known to work with Python 2.5 or later but will not work
 under any version of Python 3.
 
 Documentation

docs/introduction.rst

@@ -162,5 +162,5 @@ It will likely work fine on most UNIX systems.
 
 Supervisor will *not* run at all under any version of Windows.
 
-Supervisor is known to work with Python 2.4 or later but will not work
+Supervisor is known to work with Python 2.5 or later but will not work
 under any version of Python 3.

setup.py

@@ -15,8 +15,8 @@
 import os
 import sys
 
-if sys.version_info[:2] < (2, 4) or sys.version_info[0] > 2:
-    msg = ("Supervisor requires Python 2.4 or later but does not work on "
+if sys.version_info[:2] < (2, 5) or sys.version_info[0] > 2:
+    msg = ("Supervisor requires Python 2.5 or later but does not work on "
            "any version of Python 3.  You are using version %s.  Please "
            "install using a supported version." % sys.version)
     sys.stderr.write(msg)

tox.ini

@@ -1,8 +1,5 @@
 # !!! When making changes, make sure to also edit .travis.yml !!!
 
-# Note: Supervisor supports Python 2.4 but "py24" is not listed in envlist
-# because tox has a dependency on distribute, which no longer supports 2.4.
-
 [tox]
 envlist =
     py25,py26,py27