tests/test-archive-symlinks.t

dirs.addpath: rework algorithm to search forward

This improves performance because it uses strchr rather than a loop.

For LLVM/clang version "Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM
3.5svn)" on OS X, for a repo with over 200,000 files, this improves perfdirs
from 0.248 seconds to 0.230 (7.3%)

For gcc 4.4.6 on Linux, for a test repo with over 500,000 files, this improves
perfdirs from 0.704 seconds to 0.658 (6.5%).

#require symlink

  $ origdir=`pwd`

  $ hg init repo
  $ cd repo
  $ ln -s nothing dangling

avoid tar warnings about old timestamp

  $ hg ci -d '2000-01-01 00:00:00 +0000' -qAm 'add symlink'

  $ hg archive -t files ../archive
  $ hg archive -t tar -p tar ../archive.tar
  $ hg archive -t zip -p zip ../archive.zip

files

  $ cd "$origdir"
  $ cd archive
  $ "$TESTDIR/readlink.py" dangling
  dangling -> nothing

tar

  $ cd "$origdir"
  $ tar xf archive.tar
  $ cd tar
  $ "$TESTDIR/readlink.py" dangling
  dangling -> nothing

zip

  $ cd "$origdir"
  $ unzip archive.zip > /dev/null 2>&1
  $ cd zip
  $ "$TESTDIR/readlink.py" dangling
  dangling -> nothing

  $ cd ..