Set Default SQL buffer to *SQL*

This fixes the bug where jumping back into a org-babel SQL block seems
to "lose" the SQL process opened before. Now shift+enter will just send
the input to the open *SQL* buffer.
Improving SAS support

Added some yasnippets as well
Add SQL support by default
Renamed edwinhu.org to eddyhu.org

Also made local customizations
Merge branch 'origin-master'