Updated to reference the Makefile in the jasl sub-directory.

Instead of calling the Makefiles in the sub-directories of jasl
individually.
Updated to use/reflect the new and improved CNI wrapper.

Note that the scripts no longer explicitly create a CniWrapper object. It is
done indirectly during the first call to either cc2js() or js2cc(). The
ability to create it directly remains in the event that an instance is
necessary, but the conversion methods/functions are not actually used.
Added setting of symbolic link in the docs_all target.

The link is necessary in order for the "Source code" links in the Doxygen
output to be able to open the files generated using source-highlight.