prevent warning if only two directive parameters

git-svn-id: https://svn.stackware.com/Stackware/asmblr@6653 7701b502-9f5b-4702-8660-5d38c0671700
cnvyrc cache-dir comments

git-svn-id: https://svn.stackware.com/Stackware/asmblr@6666 7701b502-9f5b-4702-8660-5d38c0671700
extension change

git-svn-id: https://svn.stackware.com/Stackware/asmblr@6667 7701b502-9f5b-4702-8660-5d38c0671700