The #include's now follow these rules:

For libraries
 - #include <foo.h> / #include <Foo> for anything outside kdevplatform - i.e.
   other libraries
 - #include "foo.h" or #include "../foo.h" or #include "bar/foo.h" or #include
   "../bar/foo.h" for headers that are inside the same library
 - #include <bar/foo.h> for any library bar in kdevplatform

For plugins
 - #include "foo.h" only for files inside the plugin
 - #include <bar/foo.h> for any kdevplatform library bar
 - #include <foo.h> / #include <Foo> for any other libs

This allows us to remove all include_directories() calls, so we're only have -I
switches for "external" libs (like KDE/Qt) and the top-level source/binary dir
as well as the "current" source/binary dir.

This is also supposed to make our header safer against include-problems, like
using #include <icore.h> and that picks up a header of similar name from some
other lib. 

We've had a discussion about this quite a while back. Still if anybody feels
like this still has problem please speak up.

CCMAIL:kdevelop-devel@kdevelop.org