Whitespace cleanups in transports/test_pt
Whitespace cleanups in test_util
One more whitespace fix
forward-port changelog from 0.2.5.7-rc
Bump maint-0.2.5 to 0.2.5.7-rc-dev
Merge remote-tracking branch 'origin/maint-0.2.5'

(Do an "ours" merge to avoid taking version number changes)
Give an example how to run the unit tests
Mention "make check" in doc/HACKING