Move lib and test files in subdirs
Update autogen files
Add .gitignore
Expose the underlying log function
Add a CHANGES file
Remove trailing spaces
Add an (optional) functorial interface
Add more tests
Update CHANGES
Add printf-like functions
Update CHANGES
Improve the display of sections
Merge pull request #7 from samoht/master

new features
some cleaning of how files are organized and how the stuff is build