Better defaults

Signed-off-by: Paul Brook <paul@codesourcery.com>
Board variable cache

Signed-off-by: Paul Brook <paul@codesourcery.com>
Thread-safe OBJDIR creation

Signed-off-by: Paul Brook <paul@codesourcery.com>
Rewrite dependency code

Signed-off-by: Paul Brook <paul@codesourcery.com>
Build core objects in subdirectory

Signed-off-by: Paul Brook <paul@codesourcery.com>
Define UDB IDs for leonardo boards

Signed-off-by: Paul Brook <paul@codesourcery.com>
Automatically build $LIB/utility

Signed-off-by: Paul Brook <paul@codesourcery.com>
Proper dependencies for make upload

Signed-off-by: Paul Brook <paul@codesourcery.com>
parallel safe make upload

Signed-off-by: Paul Brook <paul@codesourcery.com>
Various fixes.
everything™ is working again