dep files

[Satoshi via Digitalmars-d-learn]

Hi,
I'm using package.d file for the project, where is each file 
imported. In each file is imported only that one package file 
(like `import Foo;`).

Problem is with .dep files. dep file for each source file 
contains all source files of the project just because it imports 
that package.

This made dep files quite useless because every time when I 
change something just in one file, whole project is always 
rebuild.