bug#11463: 24.1.50; vc-dir buffer is not updated correctly after commit

[Christoph Scholtes]

Point vc-dir to a directory with changed files in the directory itself
and in one or more subdirectories. Invoke vc-next-action to commit all
files. Files show up-to-date after that. Press g to refresh the buffer
and all files disappear, but any subdirectory that contained files that
were committed is till present in the list. The directories should be
removed from the list unless there are still changes present in them.

Note, this happened with a git backend, but might occur with other
backends, too.


In GNU Emacs 24.1.50.1 (i386-mingw-nt6.1.7601)
 of 2012-05-13 on MARVIN
Bzr revision: 108213 monnier@iro.umontreal.ca-20120513030506-t7ggxqlr92y8yjw4
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include
 -ID:/devel/emacs/libs/libiconv-1.13.1-1-dev/include
 -ID:/devel/emacs/libs/libxml2-2.7.8/include/libxml2'