Merge branch 'gc/gitweb-filetest-acl'

"gitweb" checks if a directory is searchable with Perl's "-x"
operator, which can be enhanced by using "filetest 'access'"
pragma, which now we do.

* gc/gitweb-filetest-acl:
  gitweb: use filetest to allow ACLs

diff --cc gitweb/gitweb.perl
Simple merge