Tweak Debian packaging

Systems that have been upgraded many times might have python 2.4 or
older versions around, ensure that we aren't shared with those, or we
get installation errors.

Author: andrewbird

debian/changelog

@@ -1,3 +1,9 @@
+python-messaging (0.4-2) lucid; urgency=low
+
+  * Packaging tweak
+
+ -- Andrew Bird <[email protected]>  Tue, 08 Jun 2010 14:19:45 +0100
+
 python-messaging (0.4-1) lucid; urgency=low
 
   * New upstream version

debian/control

@@ -4,11 +4,10 @@ Priority: extra
 Maintainer: Pablo Martí Gamboa <[email protected]>
 Build-Depends: cdbs (>= 0.4.49), debhelper (>= 5.0.38), python-central (>= 0.5.6)
 Standards-Version: 3.8.3
-XS-Python-Version: all
+XS-Python-Version: >= 2.5
 
 Package: python-messaging
 Architecture: all
-Depends: ${misc:Depends}, ${shlibs:Depends}, ${python:Depends}
-Provides: ${python:Provides}
-XB-Python-Version: ${python:Versions}
+Depends: python (>= 2.5), ${python:Depends}, ${misc:Depends}, ${shlibs:Depends}
+XB-Python-Version: >= 2.5
 Description: A SMS encoding/decoding library