[1/4] What's not in 1.5.2 (have been cooking in next)

Here are the first batch that will be in 'master' after 1.5.2 happens.

They all have been cooking in 'next', or were not compelling enough feature enhancements to be included after -rc1.

*  jb/statcolor (Sat May 5 16:48:54 2007 -0400) 1 commit
 + Add colour support in rebase and merge tree diff stats output.

*  tt/gc (Wed May 9 15:48:39 2007 -0400) 1 commit
 + Add --aggressive option to 'git gc'

*  np/pack (Wed May 9 14:42:42 2007 -0400) 3 commits
 + deprecate the new loose object header format
 + make "repack -f" imply "pack-objects --no-reuse-object"
 + allow for undeltified objects not to be reused.

*  sv/checkout (Wed May 9 12:33:20 2007 +0200) 1 commit
 + git-update-ref: add --no-deref option for overwriting/detaching
   ref

*  mst/connect (Wed May 16 20:09:41 2007 +0300) 1 commit
 + connect: display connection progress

*  dh/pack (Wed May 9 13:56:50 2007 -0700) 3 commits
 + Custom compression levels for objects and packs
 + make "repack -f" imply "pack-objects --no-reuse-object"
 + allow for undeltified objects not to be reused