Use forward slash as directory separator in all path

definitions.
(PATH_DUMPLOADSEARCH): Revert to definition used on Unix.

nt/paths.h

@@ -5,14 +5,13 @@
 /* The default search path for Lisp function "load".
    This sets load-path.  */
 /* #define PATH_LOADSEARCH "/usr/local/lib/emacs/lisp" */
-#define PATH_LOADSEARCH "C:\\emacs\\lisp"
+#define PATH_LOADSEARCH "C:/emacs/lisp"
 
 /* Like PATH_LOADSEARCH, but used only when Emacs is dumping.  This
    path is usually identical to PATH_LOADSEARCH except that the entry
    for the directory containing the installed lisp files has been
    replaced with ../lisp.  */
-/* #define PATH_DUMPLOADSEARCH "../lisp" */
-#define PATH_DUMPLOADSEARCH "..\\..\\..\\lisp"
+#define PATH_DUMPLOADSEARCH "../lisp"
 
 /* The extra search path for programs to invoke.  This is appended to
    whatever the PATH environment variable says to set the Lisp
@@ -20,27 +19,27 @@
    variable exec-directory.  exec-directory is used for finding
    executables and other architecture-dependent files.  */
 /* #define PATH_EXEC "/usr/local/lib/emacs/etc" */
-#define PATH_EXEC "C:\\emacs\\bin"
+#define PATH_EXEC "C:/emacs/bin"
 
 /* Where Emacs should look for its architecture-independent data
    files, like the NEWS file.  The lisp variable data-directory
    is set to this value.  */
 /* #define PATH_DATA "/usr/local/lib/emacs/data" */
-#define PATH_DATA "C:\\emacs\\data"
+#define PATH_DATA "C:/emacs/data"
 
 /* Where Emacs should look for its docstring file.  The lisp variable
    doc-directory is set to this value.  */
-#define PATH_DOC "C:\\emacs\\etc"
+#define PATH_DOC "C:/emacs/etc"
 
 /* The name of the directory that contains lock files with which we
    record what files are being modified in Emacs.  This directory
    should be writable by everyone.  THE STRING MUST END WITH A
    SLASH!!!  */
 /* #define PATH_LOCK "/usr/local/lib/emacs/lock/" */
-#define PATH_LOCK "C:\\emacs\\lock\\"
+#define PATH_LOCK "C:/emacs/lock/"
 
 /* Where the configuration process believes the info tree lives.  The
    lisp variable configure-info-directory gets its value from this
    macro, and is then used to set the Info-default-directory-list.  */
 /* #define PATH_INFO "/usr/local/info" */
-#define PATH_INFO "C:\\emacs\\info"
+#define PATH_INFO "C:/emacs/info"