Build binary distros on Windows using emacs-VERSION as root dir name.

* nt/makefile.w32-in: Copy README.W32 to installation directory
  during `make install'.  Remove README.W32 with `distclean' (in
  case Emacs was installed in place).  Use temporary directory to
  create distribution zip files in `dist' target.
* nt/zipdist.bat: Simplify code using temporary directory.

diff --cc nt/ChangeLog
index f0aad69d64d08a17fcfdc3cb3fd6a94e3e45216b,702f44e069ba0ce67a2a46b4088dbe1b3c6df499..4dfdd16fd32d99b46cfb10d447319d4eed6ca42e
--- 1/nt/ChangeLog
--- 2/nt/ChangeLog
+++ b/nt/ChangeLog
@@@ -1,7 -1,11 +1,17 @@@
 -2010-07-24  Christoph Scholtes  <cschol2112@gmail.com>
++2010-07-25  Christoph Scholtes  <cschol2112@gmail.com>
++
++      Build binary distros on Windows using emacs-VERSION as root dir name.
+ 
+       * makefile.w32-in: Copy README.W32 to installation directory
+       during `make install'.  Remove README.W32 with `distclean' (in
+       case Emacs was installed in place).  Use temporary directory to
+       create distribution zip files in `dist' target.
+       * zipdist.bat: Simplify code using temporary directory.
+ 
 +2010-07-25  Juanma Barranquero  <lekktu@gmail.com>
 +
 +      * runemacs.c (set_user_model_id): Fix prototype.
 +
  2010-07-24  Christoph Scholtes  <cschol2112@gmail.com>
  
        New make target for Windows platform: make dist (bug#6602)