supybot-wizard: Fix listing of plugins during setup.
supybot-wizard: Fix listing of plugins during setup.

Due to the changes to prevent the global plugins dir from being set in
supybot.directories.plugins, the global plugins weren't being found.  Simply
extend the list of directories with the global directory.

Signed-off-by: James Vega <91ae71a1168cea0b65ac9975da69d5a7753116be@users.sourceforge.net>

ProgVal/Limnoria-test,mazaclub/mazabot-core,ProgVal/Limnoria-test,frumiousbandersnatch/supybot-code,mazaclub/mazabot-core,Ban3/Limnoria,buildbot/supybot,raboof/supybot,Ban3/Limnoria,jeffmahoney/supybot,prashantpawar/supybot-rothbot,kblin/supybot-gsoc,haxwithaxe/supybot