add SKIA_VERSION_[MAJOR, MINOR, PATCH] in header and SkGraphics API



git-svn-id: http://skia.googlecode.com/svn/trunk@542 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index fa21adc..1f8ecaa 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -30,6 +30,12 @@
 /** \file SkTypes.h
 */
 
+/** See SkGraphics::GetVersion() to retrieve these at runtime
+ */
+#define SKIA_VERSION_MAJOR  1
+#define SKIA_VERSION_MINOR  0
+#define SKIA_VERSION_PATCH  0
+
 /*
     memory wrappers to be implemented by the porting layer (platform)
 */