Small fixes to example code
Added a GUID Provider and removed the use of guidify/deguidify.

Tested Smith-Waterman and treesum_1level.
Merge branch 'romain-db' of https://github.com/01org/ocr into romain-db
Small cleanup to ignore executables. Added '.exe' to all executables to allow for easy gitignore
Merged demo branch into romain-db to ensure proper deletion of romain-db branch
Merge branch 'romain-db' into demo