[bug]rm.c pwd.c getcwd.c don't work correctly in MSYS

[heromyth]

I have compiled a copy of coreutils CVS with msysDVLPR-1.0.0-alpha of 
MSYS. After I run 'rm -r *' to delete a directory with subdirectory, I 
deleted everything in the directory except for itself.

When I trace into this bug, I found the reason is because of getcwd.c:
  when it does with a directory which is mounted, the MATCHING_INO (d, 
thisino) is always false.

I try to resolve this problem, but I have found it so hard to me. Hope 
somebody can resolve it easily. Below is I have found:

The getcwd.c let Save-cwd.c can't store the location of the current 
working directory in CWD via the xgetcwd (). So the 'rm -r somedir' 
can't delete 'somedir' itself.

Also, the pwd.c can't get the correct directory.