This changes the LOG macro to be varadic removing the need for all
callsites to have double bracketing and allows for future improvement
on how we use the logging macros.
The callsites were changed with coccinelle and the changes checked by
hand. Compile tested for several frontends but not all.
A formatting annotation has also been added which allows the compiler
to check the parameters and types passed to the logging.
+ urldb API now takes URLs as nsurl, rather than string.
+ urldb internally stores full URLs with nsurl ref.
+ urldb internally stores schemes as lwc_string.
+ Load and save of cookies and URL file may be slower since
we now need to create a nsurl.
+ Everything else should be faster, and there should be much
less allocating/freeing and much less parsing of the same
url over and over again.
+ Updated urldbtest for new urldb API.
+ urldbtest now cleans up at the end
+ Added lwc_string itterator to end of urldbtest
+ Adding some broken URLs (such as http:domain/) will now
work, since nsurl fixes (http://domain/) them.
