mdwn: Avoid trying to use multimarkdown if it is not installed.
[ikiwiki] / IkiWiki /
drwxr-xr-x   ..
-rw-r--r-- 8896 CGI.pm
drwxr-xr-x - Plugin
-rw-r--r-- 3361 Receive.pm
-rw-r--r-- 16772 Render.pm
-rw-r--r-- 3166 Setup.pm
drwxr-xr-x - Setup
-rw-r--r-- 1471 UserInfo.pm
-rw-r--r-- 4606 Wrapper.pm