Item12372: Change S/MIME default to disabled.

This generates too many errors due to missing dependencies.

git-svn-id: http://svn.foswiki.org/trunk/core@16492 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Revert "Item12319: Validate and untaint DEBUG"

This reverts commit 4042a5cc1bcd6717f3e5449538b99fb01465eda9.

"use constant" is established at compile time, so my runtime fix won't work.
I don't know how to fix this.   Passing it along to the perl clergy to
figure out how to bless a solution.

git-svn-id: http://svn.foswiki.org/trunk/core@16493 0b4bb1d4-4e5a-0410-9cc4-b2b747904278