Merge branch 'lt/rev-list' into next

Merge branch 'lt/rev-list' into next

* lt/rev-list:
  First cut at libifying revlist generation
  Merge branch 'maint'
  sample hooks template.
  Teach the "git" command to handle some commands internally
  Use setenv(), fix warnings
  contrib/git-svn: version 0.10.0
  contrib/git-svn: optimize sequential commits to svn
  contrib/git-svn: add show-ignore command
  annotate: Use qx{} for pipes on activestate.
  annotate: Convert all -| calls to use a helper open_pipe().
  annotate: Handle dirty state and arbitrary revisions.
  git-fetch: print the new and old ref when fast-forwarding