Merge branch '1.7' into 1.8 & cut 1.8.3 Conflicts: fabric/version.py
Bump 1.7.3 for setup.py tweak
Cut 1.8.2
Formatting
Cut 1.8.1
Note that 1.6.4 and 1.5.5 only got a couple bugfixes
Cut 1.6.4
Cut 1.5.5
Fabric 1.8
Fabric 1.7