[PATCH 0/4] gitweb: Some improvements

This is small series of patches, applicable both to 'master' and 'next', which adds simple improvements, or in the case of last patch fix bug/typo.

First two patches were sent earlier, I don't know if they were dropped or forgotten.

---
Diffstat:
 Makefile               |    2 ++
 gitweb/git-favicon.png |  Bin
 gitweb/gitweb.perl     |   44 +++++++++++++++++++++++++++++++-------------
 3 files changed, 33 insertions(+), 13 deletions(-)

Shortlog:
 gitweb: Add GIT favicon, assuming image/png type.
 gitweb: Change the name of diff to parent link in "commit" view to "diff"
 gitweb: Divide page path into directories -- path's "breadcrumbs"
 gitweb: Correct typo: '==' instead of 'eq' in git_difftree_body