tests/test-profile.t

subrepo: lazily update git's local tracking branches

This continues the strategy of separation between hg pull and hg update in
git subrepos by only dealing with git's branches on an update. This behavior
tries to cover the bare essentials of the semantics of git pull in the subrepo
when the parent repo does hg pull and hg update.

test --time

  $ hg --time help -q help 2>&1 | grep Time > /dev/null
  $ hg init a
  $ cd a

test --profile

  $ if "$TESTDIR/hghave" -q lsprof; then
  >     hg --profile st 2>../out || echo --profile failed
  >     grep CallCount < ../out > /dev/null || echo wrong --profile
  > 
  >     hg --profile --config profiling.output=../out st 2>&1 \
  >         || echo --profile + output to file failed
  >     grep CallCount < ../out > /dev/null \
  >         || echo wrong --profile output when saving to a file
  > 
  >     hg --profile --config profiling.format=text st 2>&1 \
  >         | grep CallCount > /dev/null || echo --profile format=text failed
  > 
  >     echo "[profiling]" >> $HGRCPATH
  >     echo "format=kcachegrind" >> $HGRCPATH
  > 
  >     hg --profile st 2>../out || echo --profile format=kcachegrind failed
  >     grep 'events: Ticks' < ../out > /dev/null || echo --profile output is wrong
  > 
  >     hg --profile --config profiling.output=../out st 2>&1 \
  >         || echo --profile format=kcachegrind + output to file failed
  >     grep 'events: Ticks' < ../out > /dev/null \
  >         || echo --profile output is wrong
  > fi