Merge pull request arduino#227 from CamelCaseName/master

Added two missing macros to the compatibility pgmspace.h

Author: aentinger

api/deprecated-avr-comp/avr/pgmspace.h

@@ -30,7 +30,9 @@
 #include <inttypes.h>
 
 #define PROGMEM
+#define __ATTR_PROGMEM__ 
 #define PGM_P  const char *
+#define PGM_VOID_P const void *
 #define PSTR(str) (str)
 
 #define _SFR_BYTE(n) (n)