Add 'status_str' to diffinfo output, which stores status (also for
merge commit) as a string.  This allows for easy checking if there is
given status among all for merge commit, e.g.
  $diffinfo->{'status_str'} =~ /D/

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
This is to simplify _future_ code, so I won't cry if it is not
accepted without some code that needs it.

 gitweb/gitweb.perl |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)