BUILD.WINDOWS: update URL for windows prereqs

winbuild/BUILD.WINDOWS.txt

@@ -61,7 +61,7 @@ where <options> is one or many of:
   VC=<6,7,8,9,10,11,12>        - VC versions
   WITH_DEVEL=<path>            - Paths for the development files (SSL, zlib, etc.)
                                  Defaults to sibbling directory deps: ../deps
-                                 Libraries can be fetched at http://pecl2.php.net/downloads/php-windows-builds/
+                                 Libraries can be fetched at http://windows.php.net/downloads/php-sdk/deps/
                                  Uncompress them into the deps folder.
   WITH_SSL=<dll or static>     - Enable OpenSSL support, DLL or static
   WITH_ZLIB=<dll or static>    - Enable zlib support, DLL or static
@@ -74,4 +74,4 @@ where <options> is one or many of:
   ENABLE_WINSSL=<yes or no>    - Enable native Windows SSL support, defaults to yes
   GEN_PDB=<yes or no>          - Generate Program Database (debug symbols for release build)
   DEBUG=<yes or no>            - Debug builds
-  MACHINE=<x86 or x64>         - Target architecture (default is x86)
\ No newline at end of file
+  MACHINE=<x86 or x64>         - Target architecture (default is x86)