Remove double underscores from include guards in basic
Remove double underscores from include guards in core
Remove double underscores from include guards in gp
Remove double underscores from include guards in misc
Remove double underscores from include guards in stats
Fixing underscores in src/interface
Fix underscores in tests
Fix underscores in examples
Merge pull request #27 from dmcdougall/fix_underscore

Fix underscore