config directives now cast to boolean/null type

git-svn-id: https://svn.stackware.com/Stackware/asmblr@6753 7701b502-9f5b-4702-8660-5d38c0671700
fixed mongodb columns bug

git-svn-id: https://svn.stackware.com/Stackware/asmblr@6754 7701b502-9f5b-4702-8660-5d38c0671700