Replaced all BSD style licenses with "BSD 3 clause"
Not checked yet!
Removed duplicate "3 clause, 3 clause"
Removed trailing period if exists
Fixed some missed licences, still about 50 to do, but those can be automated
Think I got the last of them.
Apparently me and sed have different ideas of regex.
Found a few more
* be explicit about size of integers
* functions renamed to reflect this
* also, raise TypeError instead of ValueError
TODO Check if the C code obeys the C strict aliasing rule; if it doesn't,
it might break with very strong optimizers.
Jaques Grobler