* win32/README.win32: added mention about build directory. currently

we can not build ruby in win32 directory.  this problem is reported
  by Masahiro Kitajima <katonbo@katontech.com>.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Nov 13 12:30:26 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/README.win32: added mention about build directory.  currently
+	  we can not build ruby in win32 directory.  this problem is reported
+	  by Masahiro Kitajima <katonbo@katontech.com>.
+
 Tue Nov 13 11:03:47 2012  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* re.c (rb_memsearch_ss): performance improvement by using memmem(3) if

win32/README.win32

@@ -134,4 +134,8 @@ the ruby source directory, this restriction comes from the behavior of
 (({!INCLUDE})) directives of (({NMAKE})).
 ((- you may call it a bug. -))
 
+You can build ruby in any directory including the source directory,
+except (({win32})) directory in the source directory.
+This is restriction originating in the path search method of (({NMAKE})).
+
 =end