Rebuilt the accis subdirectory itself under git.

Accis has been reconfigured in a major way and brought under git
version control. To incorporate the new version, the following was done
in the COPTIC directory.

mv accis accisold
git rm accis/*
git clone ~/accis
git add accis/         ! the trailing / is necessary.
git commit -a	       ! this commit.

I had previously done a test to show that the new version does actually
work to compile coptic and analysis/