tests/test-revlog-raw.py.out

headssummary: directly feed the function with the 'pushop' object

Our goal is to be able to perform the post processing directly into the
'_headssummary' function. However before this patch the '_headsummary' function
only had access to repo, remote, outgoing while the '_postprocessobsolete'
function takes a 'pushop' object.  Experience shows that having the 'pushop'
object helps extensions so we update '_headssummary' to take a pushop
object as argument.

local test passed
addgroupcopy test passed
clone test passed
lowlevelcopy test passed