git-cvsexportcommit fails for huge commits

Hi,

git-cvsexportcommit fails for huge commits, that is commits with lots of files.
To be exact, the problem arises if the generated 'cvs status' command exceeds
the maximum length for commands.

Here is the error:

Can't exec "cvs": Argument list too long at /home/mkl/bin/git-cvsexportcommit
line 334.  Argument list too long 0 at /home/mkl/bin/git-cvsexportcommit line
334.  cvs status [snip: long, long list of files]  1792 at
/home/mkl/bin/git-cvsexportcommit line 332.

The complete error message was 334523 characters long before I snipped the
files.

Used version is from public git repository, Tue Dec 11 20:59:01 CET 2007
(bf82a15095ed374496c2e98b6b672aa8c8c4d034).