Increment Mapbase version to v7.3

Author: Blixibon

sp/src/public/tier0/platform.h

@@ -1281,8 +1281,8 @@ PLATFORM_INTERFACE bool Is64BitOS();
 //-----------------------------------------------------------------------------
 // General Mapbase version constants compiled into projects for versioning purposes
 //-----------------------------------------------------------------------------
-#define MAPBASE_VERSION "7.2"
-#define MAPBASE_VER_INT 7200	// For use in #if in a similar fashion to macros like _MSC_VER
+#define MAPBASE_VERSION "7.3"
+#define MAPBASE_VER_INT 7300	// For use in #if in a similar fashion to macros like _MSC_VER
 #endif