Reformat dates in change log to appease CPAN::Changes

Thanks to Neil Bowers for pointing it out.
Export catfile in test lib for extra laziness
Load our modules from test lib for even more laziness
Don't warn at exit() if it's a child process

Avoid the unnecessary and confusing noise
since a child process probably would exit.
Test that fork/exit passes and doesn't warn
Mention change to exit warning in change log
Bump version
Update built files for 0.369