gitweb: more support for PATH_INFO based URLs
gitweb: more support for PATH_INFO based URLs

Now three types of path based URLs are supported:
	gitweb.cgi/project.git
	gitweb.cgi/project.git/branch
	gitweb.cgi/project.git/branch/filename

The first one (show project summary) was already supported for a long time
now.  The other two are new: they show the shortlog of a branch or
the plain file contents of some file contained in the repository.

This is especially useful to support project web pages for small
projects: just create an html branch and then use an URL like
gitweb.cgi/project.git/html/index.html.

Signed-off-by: Martin Waitz <7b58d40291ca68e315b464e082026bd30087ffb3@admingilde.org>
Acked-by: Jakub Narebski <a6a1517a087f9f64a72f41a0de57ff01fbb0e412@gmail.com>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git