revsetbenchmarks: display relative change when meaningful
If the time difference is more than 5% from the previous run, we'll display
relative information. This makes it much simpler to spot performance changes in
a sea of benchmarks.
%include map-cmdline.default
changeset = '{cset}{lbisect}{branches}{bookmarks}{tags}{parents}{user}{ldate}{summary}\n'
changeset_quiet = '{lshortbisect} {rev}:{node|short}\n'
changeset_verbose = '{cset}{lbisect}{branches}{bookmarks}{tags}{parents}{user}{ldate}{lfiles}{lfile_copies_switch}{description}\n'
changeset_debug = '{fullcset}{lbisect}{branches}{bookmarks}{tags}{lphase}{parents}{manifest}{user}{ldate}{lfile_mods}{lfile_adds}{lfile_dels}{lfile_copies_switch}{extras}{description}\n'
# We take the zeroth word in order to omit "(implicit)" in the label
bisectlabel = ' bisect.{word('0', bisect)}'
lbisect ='{label("log.bisect{if(bisect, bisectlabel)}",
"bisect: {bisect}\n")}'
lshortbisect ='{label("log.bisect{if(bisect, bisectlabel)}",
"{bisect|shortbisect}")}'