[devel] Make PNG_ALLOCATED blank when _MSC_VER<1300 in pngconf.h

ANNOUNCE

 
-Libpng 1.5.2beta03 - February 28, 2011
+Libpng 1.5.2beta03 - March 3, 2011
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -48,9 +48,10 @@ Version 1.5.2beta02 [February 19, 2011]
     This documents the current behavior, where the callback is called after
     every row with information pertaining to the next row.
 
-Version 1.5.2beta03 [February 28, 2011]
+Version 1.5.2beta03 [March 3, 2011]
   Fixed scripts/makefile.vcwin32
   Updated contrib/pngsuite/README to add the word "modify".
+  Define PNG_ALLOCATED to blank when _MSC_VER<1300.
 
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CHANGES

@@ -3264,9 +3264,10 @@ Version 1.5.2beta02 [February 19, 2011]
     This documents the current behavior, where the callback is called after
     every row with information pertaining to the next row.
 
-Version 1.5.2beta03 [February 28, 2011]
+Version 1.5.2beta03 [March 3, 2011]
   Fixed scripts/makefile.vcwin32
   Updated contrib/pngsuite/README to add the word "modify".
+  Define PNG_ALLOCATED to blank when _MSC_VER<1300.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

pngconf.h

@@ -404,7 +404,11 @@
 #      define PNG_PTR_NORETURN /* not supported */
 #    endif
 #    ifndef PNG_ALLOCATED
-#      define PNG_ALLOCATED __declspec(restrict)
+#      if (_MSC_VER < 1300)
+#         define PNG_ALLOCATED /* not supported */
+#      else
+#         define PNG_ALLOCATED __declspec(restrict)
+#      endif
 #    endif
 
     /* This specifically protects structure members that should only be