Fix build breakage by linker.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5865 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Remove curredit shared variable.

The "curredit" trick is very poor for task re-entrance.
Hope nothing is broken by this change.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5866 63ad8ddf-47c3-0310-b6dd-a9e9d9715204