ADDED: debug info in System info to show if $CONF['ItemURL'] is broken in admin panel...

ADDED: debug info in System info to show if $CONF['ItemURL'] is broken in admin panel (admun)
FIXED: Reorder the setting of config vars ($CONF) to avoid notices (should have no side effects)(kaigreve)
FIXED: Avoid notices caused by explode because the string '\\' is not a part of the $val and no array is returned(kaigreve)
FIXED: remove one redundant definition of the constant _MANAGER_PLUGINFILE_NOTFOUND(kaigreve)

git-svn-id: https://svn.sourceforge.jp/svnroot/nucleus-jp/nucleus-jp/trunk/utf8@973 1ca29b6e-896d-4ea0-84a5-967f57386b96