tests/bzr-definitions

dirstate: use a presized dict for the dirstate

This uses a simple heuristic to avoid expensive resizes.

On a real-world repo with around 400,000 files, perfdirstate:

before: ! wall 0.155562 comb 0.160000 user 0.150000 sys 0.010000 (best of 64)
after:  ! wall 0.132638 comb 0.130000 user 0.120000 sys 0.010000 (best of 75)

On another real-world repo with around 250,000 files:

before: ! wall 0.098459 comb 0.100000 user 0.090000 sys 0.010000 (best of 100)
after:  ! wall 0.089084 comb 0.090000 user 0.080000 sys 0.010000 (best of 100)

# this file holds the definitions that are used in various bzr tests

"$TESTDIR/hghave" bzr || exit 80

TERM=dumb; export TERM
echo '[extensions]' >> $HGRCPATH
echo 'convert = ' >> $HGRCPATH

glog()
{
    hg log -G --template '{rev}@{branch} "{desc|firstline}" files: {files}\n' "$@"
}

manifest()
{
    echo "% manifest of $2"
    hg -R $1 manifest -v -r $2
}