Merge pull request #3 from biomimetics/master

Your changes are now in biomimetics, with some minor cleanup and restructuring
Merge branch 'biomimetics/master'
Changed chip-specific include from old C30 style to newer XC16 style.
Modifications to dfmem module to retrieve security register, and provide a unique ID.
Updated and corrected comments.
Undoing untested edit to ppool.c from commit pullin@8ba57494baf961634e2373f04089c6e8dfb917db , which is blocking merge of dfmem_unique_id.
Merge pull request #68 from apullin/dfmem_unique_id

dfmem unique ID