I just did and "cvs checkout" and the resulting source tree no longer configures/compiles.
The problems seem to relate to the following directories:
dlls/amstream dlls/dxerr8 dlls/dxerr9
which seem to have been added or removed very recently.
I tried hacking around in the configure script but couldn't get it to work.
I also had a problem with amstream not being updated but a fresh checkout worked in my case.
bye Fabi