Merged from trunk 6239:6242

Merged from trunk 6239:6242

make sure we prefix all arguments with $D, including ones that dont
start with a / (SpankMan)

Use locals() instead of setattr to insert generated functions into the
current module.  Thanks to Brian Harring for the suggestion.

Never use listdir with both recursion=True and followSymlinks=True since
it circular symlinks will lead to endless recursion loops.  Thanks to
Tobias Hahn <tobhahn@web.de> for this patch.

svn path=/main/branches/prefix/; revision=6243