*default-timezone* was used before being defined, causing a compile warning.

 in format-rfc3339-timestring omit-timezon-part defaults to omit-time-part, because you most probably don't need the timezone if the time itself is not displayed.

useful things for copy/pasting:
darcs get http://common-lisp.net/project/alexandria/darcs/alexandria/
darcs get http://dwim.hu/darcs/hu.dwim.stefil
(asdf:test-system :local-time)

 roll back my change where adjust-timestamp defaulted to UTC (both are broken, but this way it's at least backwards compatible)

 adjust-timestamp defaults to :utc-offset 0 unless timezone is specified. fixes surprises shown by test adjust-timestamp/bug2 (PLEASE AUDIT!)

 try to make the initialization of *project-home-directory* a bit less fragile when not loading through ASDF

although i personally am much more interested in making local-time load with xcvb, than keeping it in one
file that can be CL:LOAD'ed...

http://common-lisp.net/pipermail/local-time-devel/2009-October/000173.html