gitweb: export options

gitweb: export options

$export_ok: If this variable evaluates to true it is checked
if a file with this name exists in the repository.  If it
does not exist the repository cannot be viewed from gitweb.
(Similar to git-daemon-export-ok for git-daemon).

$strict_export: If this variable evaluates to true only
repositories listed on the project-list-page of gitweb can
be accessed.

Signed-off-by: Junio C Hamano <junkio@cox.net>