doc: Include the 1.3.5 release notes

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>
Use the older Thread.getName() interface for python 2.4 compat
Use older nested try syntax for finally for python 2.4 compat
use Bcfg2.Compat to get any()
Merge branch 'bcfg2-1.3.5-python2.4-compat' of https://github.com/fennm/bcfg2 into maint