Update in preparation for 0.5 release.
Added file local functions.
Added file local for orgel
Use three arguments for m-buffer-replace-match

This is due to a change in m-buffer which extended the arguments
for this function.
New test for orgel to org transformation.
Literate documentation for linked-buffer-org.

We now use linked-buffer-org to document itself.
Test files added for org-orgel