gitweb: Pager refactoring - use git_get_paging_nav for pagination
gitweb: Pager refactoring - use git_get_paging_nav for pagination

Add git_get_paging_nav subroutine which returns string with pager
(paging nav) for shortlog and log actions.

Signed-off-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