- modules: age of a few files were set to time(); use stat. Fixed.

- modules: age of a few files were set to time(); use stat.  Fixed.
- validChan: check for undefine arg; check for $c{$c} to avoid creating it.
- chanservCheck: check for $c{$c} to avoid creating it.
- factoidCheck: now deferred.

git-svn-id: https://svn.code.sf.net/p/infobot/code/trunk@542 c11ca15a-4712-0410-83d8-924469b57eb5