Make Python 2.6 the minimum supported version and remove hacks for Python 2.5, since all releng machines now have Python 2.6 as a minimum. r=Jesse
Make Python 2.6 the minimum supported version and remove hacks for Python 2.5, since all releng machines now have Python 2.6 as a minimum. r=Jesse

nth10sd/lithium,MozillaSecurity/lithium,MozillaSecurity/lithium,nth10sd/lithium