Modify snippets for c and c++.

This alters the way Doxygen comments are generated in C++ and C files.
Update spelling dictionaries.

Minor updates to spell files.
Remove boost from ctrlp search path.

This will prevent the ctrl-p plugin from searching boost directories.
which is a very large number of files.
Some minor updates for mac systems.

Fixes some tex9 issues and some iTerm2 issues with mac systems.
Merge 'master' into 'base16'

Bring in changes from Linux and mac.